17 #

    28 

    29 =============================================================================

    30 

    31                         GNU GENERAL PUBLIC LICENSE

    32                           Version 3, 29 June 2007

    33 

    34 Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>

    35 

    36     Everyone is  permitted  to copy  and  distribute  verbatim  copies  of  this

    37 license document, but changing it is not allowed.

    38 

    39                                 Preamble

    40 

    41     The GNU General Public License is a free, copyleft license for software  and

    42 other kinds of works.

    43 

    44     The licenses for most software and other practical  works  are  designed  to

    45 take away your freedom to share and change  the  works.  By  contrast,  the  GNU

    46 General Public License is intended to guarantee your freedom to share and change

    47 all versions of a program--to make sure it remains free  software  for  all  its

    48 users. We, the Free Software Foundation, use the GNU General Public License  for

    49 most of our software; it applies also to any other work released this way by its

    50 authors. You can apply it to your programs, too.

    51 

    52     When we speak of free software, we are referring to freedom, not price.  Our

    53 General Public Licenses are designed to make sure that you have the  freedom  to

    54 distribute copies of free software (and charge for them if you wish),  that  you

    55 receive source code or can get it if you  want  it,  that  you  can  change  the

    56 software or use pieces of it in new free programs, and that you know you can  do

    57 these things.

    58 

    59     To protect your rights, we need to prevent others  from  denying  you  these

    60 rights or asking you to  surrender  the  rights.  Therefore,  you  have  certain

    61 responsibilities if you distribute copies of the software, or if you modify  it:

    62 responsibilities to respect the freedom of others.

    63 

    64     For example, if you distribute copies of such a program, whether  gratis  or

    65 for a fee, you must pass on  to  the  recipients  the  same  freedoms  that  you

    66 received. You must make sure that they, too, receive or can get the source code.

    67 And you must show them these terms so they know their rights.

    68 

    69     Developers that use the GNU GPL protect your  rights  with  two  steps:  (1)

    70 assert copyright on the software, and (2) offer  you  this  License  giving  you

    71 legal permission to copy, distribute and/or modify it.

    72 

    73     For the developers' and authors' protection, the GPL clearly  explains  that

    74 there is no warranty for this free software.  For both users' and authors' sake,

    75 the GPL requires that modified versions be marked  as  changed,  so  that  their

    76 problems will not be attributed erroneously to authors of previous versions.

    77 

    78     Some devices are designed to deny  users  access  to install or run modified

    79 versions of the software inside them, although the manufacturer can do so.  This

    80 is fundamentally incompatible with  the  aim  of  protecting  users' freedom  to

    81 change the software. The systematic pattern of such abuse occurs in the area  of

    82 products  for  individuals  to  use,  which  is  precisely  where  it  is   most

    83 unacceptable. Therefore, we have designed this version of the  GPL  to  prohibit

    84 the practice for those products. If such problems arise substantially  in  other

    85 domains, we stand ready to extend this provision  to  those  domains  in  future

    86 versions of the GPL, as needed to protect the freedom of users.

    87 

    88     Finally, every program is threatened constantly by software patents.  States

    89 should not allow  patents  to  restrict  development  and  use  of  software  on

    90 general-purpose computers, but in those that do, we wish to  avoid  the  special

    91 danger that patents  applied  to  a  free  program  could  make  it  effectively

    92 proprietary. To prevent this, the GPL assures that patents  cannot  be  used  to

    93 render the program non-free.

    94 

    95     The precise terms and conditions for copying, distribution and  modification

    96 follow.

    97 

    98                            TERMS AND CONDITIONS

    99 

   100 0. Definitions.

   101 ---------------

   102 

   103     “This License” refers to version 3 of the GNU General Public License.

   104 

   105     “Copyright” also means copyright-like laws that  apply  to  other  kinds  of

   106 works, such as semiconductor masks.

   107 

   108     “The Program” refers to any copyrightable work licensed under this  License.

   109 Each licensee is  addressed  as  “you”.  “Licensees”  and  “recipients”  may  be

   110 individuals or organizations.

   111 

   112     To “modify” a work means to copy from or adapt all or part of the work in  a

   113 fashion requiring copyright permission, other than the making of an exact  copy.

   114 The resulting work is called a “modified version” of the earlier work or a  work

   115 “based on” the earlier work.

   116 

   117     A “covered work” means either the unmodified Program or a work based on  the

   118 Program.

   119 

   120     To “propagate” a work means to do anything with it that, without permission,

   121 would make you directly or secondarily liable for infringement under  applicable

   122 copyright law, except executing it on a computer or modifying  a  private  copy.

   123 Propagation includes  copying,  distribution  (with  or  without  modification),

   124 making available to the public, and in some countries other activities as well.

   125 

   126     To “convey” a work means any kind of propagation that enables other  parties

   127 to make or receive copies. Mere interaction  with  a  user  through  a  computer

   128 network, with no transfer of a copy, is not conveying.

   129 

   130     An interactive user interface displays  “Appropriate Legal Notices”  to  the

   131 extent that it includes a convenient and prominently visible  feature  that  (1)

   132 displays an appropriate copyright notice, and (2) tells the user that  there  is

   133 no warranty for the work (except to the extent that warranties are provided),

   134 that licensees may convey the work under this License, and how to view a copy of

   135 this License. If the interface presents a list of user commands or options, such

   136 as a menu, a prominent item in the list meets this criterion.

   137 

   138 

   139 1. Source Code.

   140 ---------------

   141 

   142     The “source code” for a work means the preferred form of the work for making

   143 modifications to it. “Object code” means any non-source form of a work.

   144 

   145     A “Standard Interface”  means  an  interface  that  either  is  an  official

   146 standard defined by a recognized standards body, or, in the case  of  interfaces

   147 specified for a particular programming language, one that is widely  used  among

   148 developers working in that language.

   149 

   150     The “System Libraries” of an executable work include  anything,  other  than

   151 the work as a whole, that (a) is included in the  normal  form  of  packaging  a

   152 Major Component, but which is not part of that Major Component, and  (b)  serves

   153 only to enable use of the work with that Major  Component,  or  to  implement  a

   154 Standard Interface for which an implementation is available  to  the  public  in

   155 source code form. A “Major Component”, in this context, means a major  essential

   156 component (kernel, window system, and so on) of the  specific  operating  system

   157 (if any) on which the executable work runs, or a compiler used  to  produce  the

   158 work, or an object code interpreter used to run it.

   159 

   160     The “Corresponding Source” for a work in object  code  form  means  all  the

   161 source code needed to generate, install, and (for an executable  work)  run  the

   162 object code  and  to  modify  the  work,  including  scripts  to  control  those

   163 activities. However, it  does  not  include  the  work's  System  Libraries,  or

   164 general-purpose tools or  generally  available  free  programs  which  are  used

   165 unmodified in performing those activities but which are not part  of  the  work.

   166 For example, Corresponding Source includes interface definition files associated

   167 with source files for the work, and the source code  for  shared  libraries  and

   168 dynamically linked  subprograms  that  the  work  is  specifically  designed  to

   169 require, such as by intimate data communication or control  flow  between  those

   170 subprograms and other parts of the work.

   171 

   172     The Corresponding Source need not include anything that users can regenerate

   173 automatically from other parts of the Corresponding Source.

   174 

   175     The Corresponding Source for a work in source code form is that same work.

   176 

   177 2. Basic Permissions.

   178 ---------------------

   179 

   180     All rights granted under this License are granted for the term of  copyright

   181 on the Program, and are irrevocable provided the stated conditions are met. This

   182 License explicitly affirms your  unlimited  permission  to  run  the  unmodified

   183 Program. The output from running a covered work is covered by this License  only

   184 if the output, given its content,  constitutes  a  covered  work.  This  License

   185 acknowledges your rights of  fair  use  or  other  equivalent,  as  provided  by

   186 copyright law.

   187 

   188     You may make, run and propagate  covered  works  that  you  do  not  convey,

   189 without conditions so long as your license otherwise remains in force.  You  may

   190 convey covered works to  others  for  the  sole  purpose  of  having  them  make

   191 modifications exclusively for you, or provide you with  facilities  for  running

   192 those works, provided that  you  comply  with  the  terms  of  this  License  in

   193 conveying all material for which you do not control copyright. Those thus making

   194 or running the covered works for you must do  so  exclusively  on  your  behalf,

   195 under your direction and control, on terms that prohibit them  from  making  any

   196 copies of your copyrighted material outside their relationship with you.

   197 

   198     Conveying under any  other  circumstances  is  permitted  solely  under  the

   199 conditions stated below. Sublicensing  is  not  allowed;  section  10  makes  it

   200 unnecessary.

   201 

   202 3. Protecting Users' Legal Rights From Anti-Circumvention Law.

   203 --------------------------------------------------------------

   204 

   205     No covered work shall be deemed part of an effective  technological  measure

   206 under any applicable law fulfilling obligations under article  11  of  the  WIPO

   207 copyright treaty adopted on 20 December 1996, or  similar  laws  prohibiting  or

   208 restricting circumvention of such measures.

   209 

   210     When you convey a  covered  work,  you  waive  any  legal  power  to  forbid

   211 circumvention of technological measures to  the  extent  such  circumvention  is

   212 effected by exercising rights under this License with  respect  to  the  covered

   213 work, and you disclaim any intention to limit operation or modification  of  the

   214 work as a means of enforcing, against the work's users, your or  third  parties'

   215 legal rights to forbid circumvention of technological measures.

   216 

   217 

   218 4. Conveying Verbatim Copies.

   219 -----------------------------

   220 

   221     You may convey verbatim copies of the Program's source code as  you  receive

   222 it, in any medium, provided that you conspicuously and appropriately publish  on

   223 each copy an appropriate copyright notice; keep intact all notices stating  that

   224 this License and any non-permissive terms added in accord with section  7  apply

   225 to the code; keep intact all notices of the absence of any  warranty;  and  give

   226 all recipients a copy of this License along with the Program.

   227 

   228     You may charge any price or no price for each copy that you convey, and  you

   229 may offer support or warranty protection for a fee.

   230 

   231 5. Conveying Modified Source Versions.

   232 --------------------------------------

   233 

   234     You may convey a work based on the Program, or the modifications to  produce

   235 it from the Program, in the form of source code under the terms  of  section  4,

   236 provided that you also meet all of these conditions:

   237 

   238     a) The work must carry prominent notices stating that you modified  it,  and

   239        giving a relevant date.

   240     b) The work must carry prominent notices stating that it is  released  under

   241        this License and any conditions added under section 7.  This  requirement

   242        modifies the requirement in section 4 to “keep intact all notices”.

   243     c) You must license the entire work, as  a  whole,  under  this  License  to

   244        anyone who comes into possession of a copy. This License  will  therefore

   245        apply, along with any applicable section 7 additional terms, to the whole

   246        of the work, and all its parts, regardless of how they are packaged. This

   247        License gives no permission to license the work in any other way, but  it

   248        does not invalidate such permission if you have separately received it.

   249     d) If  the  work  has  interactive  user  interfaces,  each   must   display

   250        Appropriate Legal  Notices;  however,  if  the  Program  has  interactive

   251        interfaces that do not display Appropriate Legal Notices, your work  need

   252        not make them do so.

   253 

   254     A compilation of a covered work with other separate and  independent  works,

   255 which are not by their nature extensions of the covered work, and which are  not

   256 combined  with it such as to  form a larger  program,  in or on a  volume  of  a

   257 storage or distribution medium, is called an “aggregate” if the compilation  and

   258 its resulting copyright are not used to limit the access or legal rights of  the

   259 compilation's users beyond what  the  individual  works  permit.  Inclusion of a

   260 covered work in an aggregate does not cause this License to  apply to the  other

   261 parts of the aggregate.

   262 

   263 6. Conveying Non-Source Forms.

   264 ------------------------------

   265 

   266     You may  convey a covered  work in  object  code  form  under  the  terms of

   267 sections  4  and  5,  provided  that  you  also  convey   the   machine-readable

   268 Corresponding Source under the terms of this License, in one of these ways:

   269 

   270     a) Convey the object code in, or embodied in, a physical product  (including

   271        a physical distribution medium), accompanied by the Corresponding  Source

   272        fixed  on  a  durable  physical  medium  customarily  used  for  software

   273        interchange.

   274     b) Convey the object code in, or embodied in, a physical product  (including

   275        a physical distribution medium), accompanied by a  written  offer,  valid

   276        for at least three years and valid for as long as you offer  spare  parts

   277        or customer support for that product model, to give anyone who  possesses

   278        the object code either (1) a copy of the Corresponding Source for all the

   279        software in the product that is covered by  this  License,  on a  durable

   280        physical medium customarily used for software interchange, for a price no

   281        more than your reasonable cost of physically performing this conveying of

   282        source, or (2) access to  copy the  Corresponding Source  from a  network

   283        server at no charge.

   284     c) Convey individual copies of the  object code  with a copy of the  written

   285        offer to provide the Corresponding Source. This  alternative  is  allowed

   286        only occasionally and noncommercially,  and  only  if  you  received  the

   287        object code with such an offer, in accord with subsection 6b.

   288     d) Convey the object code by offering access from a designated place (gratis

   289        or for a charge), and offer equivalent access to the Corresponding Source

   290        in the same way through the same place at no further charge. You need not

   291        require recipients to copy the Corresponding Source along with the object

   292        code. If the place to copy the object  code  is  a  network  server,  the

   293        Corresponding Source may be on a different server (operated by you  or  a

   294        third party) that supports equivalent copying  facilities,  provided  you

   295        maintain clear directions next to the object code saying  where  to  find

   296        the  Corresponding   Source.   Regardless  of  what   server   hosts  the

   297        Corresponding Source, you remain obligated to ensure that it is available

   298        for as long as needed to satisfy these requirements.

   299     e) Convey the object code  using  peer-to-peer  transmission,  provided  you

   300        inform other peers where the object code and Corresponding Source of  the

   301        work are  being  offered  to  the  general  public  at  no  charge  under

   302        subsection 6d.

   303 

   304     A separable portion of the object code, whose source code is  excluded  from

   305 the Corresponding Source as a System Library, need not be included in  conveying

   306 the object code work.

   307 

   308     A “User Product”  is  either  (1)  a  “consumer product”,  which  means  any

   309 tangible personal property which is  normally  used  for  personal,  family,  or

   310 household purposes, or (2) anything designed or sold for  incorporation  into  a

   311 dwelling. In determining whether a product is a consumer product, doubtful cases

   312 shall be resolved in favor of coverage. For a particular product received  by  a

   313 particular user, “normally used” refers to a typical or common use of that class

   314 of product, regardless of the status of the particular user or  of  the  way  in

   315 which the particular user actually uses, or expects or is expected to  use,  the

   316 product. A product is a consumer product regardless of whether the  product  has

   317 substantial commercial,  industrial  or  non-consumer  uses,  unless  such  uses

   318 represent the only significant mode of use of the product.

   319 

   320     “Installation Information” for a User Product means any methods, procedures,

   321 authorization keys,  or  other  information  required  to  install  and  execute

   322 modified versions of a covered work in that User Product from a modified version

   323 of its Corresponding Source. The information must suffice  to  ensure  that  the

   324 continued functioning of the modified object code is in  no  case  prevented  or

   325 interfered with solely because modification has been made.

   326 

   327     If you convey an object code  work  under  this  section  in,  or  with,  or

   328 specifically for use in, a User Product, and the conveying occurs as part  of  a

   329 transaction in which the right of possession and use  of  the  User  Product  is

   330 transferred to the recipient in perpetuity or for a fixed  term  (regardless  of

   331 how the transaction is characterized), the Corresponding Source  conveyed  under

   332 this section must be accompanied  by  the  Installation  Information.  But  this

   333 requirement does not apply if neither  you  nor  any  third  party  retains  the

   334 ability to install modified object code on the User Product  (for  example,  the

   335 work has been installed in ROM).

   336 

   337     The requirement to provide  Installation  Information  does  not  include  a

   338 requirement to continue to provide support service, warranty, or updates  for  a

   339 work that has been modified or installed by  the  recipient,  or  for  the  User

   340 Product in which it has been modified or installed. Access to a network  may  be

   341 denied when  the  modification  itself  materially  and  adversely  affects  the

   342 operation of the network or violates the rules and protocols  for  communication

   343 across the network.

   344 

   345     Corresponding Source conveyed, and  Installation  Information  provided,  in

   346 accord with this section must be in a format that is  publicly  documented  (and

   347 with an implementation available to the public in source code  form),  and  must

   348 require no special password or key for unpacking, reading or copying.

   349 

   350 7. Additional Terms.

   351 --------------------

   352 

   353     “Additional permissions” are terms that supplement the terms of this License

   354 by making exceptions from one or more of its conditions. Additional  permissions

   355 that are applicable to the entire Program shall be treated as though  they  were

   356 included in this License, to the extent that they  are  valid  under  applicable

   357 law. If additional permissions apply only to part of the Program, that part  may

   358 be used separately under those  permissions,  but  the  entire  Program  remains

   359 governed by this License without regard to the additional permissions.

   360 

   361     When you convey a copy of a covered work, you may at your option remove  any

   362 additional permissions from that copy, or  from  any  part  of  it.  (Additional

   363 permissions may be written to require their own removal in  certain  cases  when

   364 you modify the work.) You may place additional permissions on material, added by

   365 you to a covered work, for which you have  or  can  give  appropriate  copyright

   366 permission.

   367 

   368     Notwithstanding any other provision of this License, for material you add to

   369 a covered work, you  may  (if  authorized  by  the  copyright  holders  of  that

   370 material) supplement the terms of this License with terms:

   371 

   372     a) Disclaiming warranty or limiting liability differently from the terms  of

   373        sections 15 and 16 of this License; or

   374     b) Requiring preservation of specified reasonable legal  notices  or  author

   375        attributions in  that  material  or  in  the  Appropriate  Legal  Notices

   376        displayed by works containing it; or

   377     c) Prohibiting  misrepresentation  of  the  origin  of  that   material,  or

   378        requiring that modified versions of such material be marked in reasonable

   379        ways as different from the original version; or

   380     d) Limiting the use for publicity purposes of names of licensors or  authors

   381        of the material; or

   382     e) Declining to grant rights under trademark  law  for  use  of  some  trade

   383        names, trademarks, or service marks; or

   384     f) Requiring indemnification of licensors and authors of  that  material  by

   385        anyone who conveys  the  material  (or  modified  versions  of  it)  with

   386        contractual assumptions of liability to the recipient, for any  liability

   387        that these contractual assumptions directly impose on those licensors and

   388        authors.

   389 

   390     All  other  non-permissive  additional   terms   are   considered   “further

   391 restrictions” within the meaning of section 10. If the Program as  you  received

   392 it, or any part of it, contains a notice stating that it  is  governed  by  this

   393 License along with a term that is a further restriction,  you  may  remove  that

   394 term.  If  a  license  document  contains  a  further  restriction  but  permits

   395 relicensing or conveying under this License, you  may  add  to  a  covered  work

   396 material governed by the terms of  that  license  document,  provided  that  the

   397 further restriction does not survive such relicensing or conveying.

   398 

   399     If you add terms to a covered work in accord with  this  section,  you  must

   400 place, in the relevant source files, a statement of the  additional  terms  that

   401 apply to those files, or a notice indicating where to find the applicable terms.

   402 

   403     Additional terms, permissive or non-permissive, may be stated in the form of

   404 a separately written license, or stated as exceptions;  the  above  requirements

   405 apply either way.

   406 

   407 8. Termination.

   408 ---------------

   409 

   410     You may not propagate or modify a covered work except as expressly  provided

   411 under this License. Any attempt otherwise to propagate or modify it is void, and

   412 will automatically terminate your  rights  under  this  License  (including  any

   413 patent licenses granted under the third paragraph of section 11).

   414 

   415     However, if you cease all violation of this License, then your license  from

   416 a particular copyright holder is reinstated (a) provisionally, unless and  until

   417 the copyright holder explicitly and finally terminates  your  license,  and  (b)

   418 permanently, if the copyright holder fails to notify you  of  the  violation  by

   419 some reasonable means prior to 60 days after the cessation.

   420 

   421     Moreover, your license from a  particular  copyright  holder  is  reinstated

   422 permanently if the copyright holder  notifies  you  of  the  violation  by  some

   423 reasonable means, this is the first time you have received notice  of  violation

   424 of this License (for any work) from that copyright  holder,  and  you  cure  the

   425 violation prior to 30 days after your receipt of the notice.

   426 

   427     Termination of your  rights  under  this  section  does  not  terminate  the

   428 licenses of parties who have received copies  or  rights  from  you  under  this

   429 License. If your rights have been terminated and not permanently reinstated, you

   430 do not qualify to receive new licenses for the same material under section 10.

   431 

   432 9. Acceptance Not Required for Having Copies.

   433 ---------------------------------------------

   434 

   435     You are not required to accept this License in order to  receive  or  run  a

   436 copy of the Program. Ancillary propagation of a covered work occurring solely as

   437 a consequence of using peer-to-peer transmission to receive a copy likewise does

   438 not require acceptance. However, nothing other  than  this  License  grants  you

   439 permission to propagate or modify  any  covered  work.  These  actions  infringe

   440 copyright if you  do  not  accept  this  License.  Therefore,  by  modifying  or

   441 propagating a covered work, you indicate your  acceptance  of  this  License  to

   442 do so.

   443 

   444 10. Automatic Licensing of Downstream Recipients.

   445 -------------------------------------------------

   446 

   447     Each time you convey a covered work, the recipient automatically receives  a

   448 license from the original licensors, to run, modify  and  propagate  that  work,

   449 subject to this License. You are not responsible  for  enforcing  compliance  by

   450 third parties with this License.

   451 

   452     An  “entity  transaction”  is  a  transaction  transferring  control  of  an

   453 organization,  or  substantially  all   assets   of  one,  or   subdividing   an

   454 organization, or merging organizations. If propagation of a covered work results

   455 from an entity transaction, each party to that transaction who receives  a  copy

   456 of the work also receives whatever licenses to the work the party's  predecessor

   457 in interest had or could give under the  previous  paragraph,  plus a  right  to

   458 possession of the Corresponding Source of  the  work  from  the  predecessor  in

   459 interest, if the predecessor has it or can get it with reasonable efforts.

   460 

   461     You may not impose any further restrictions on the  exercise of  the  rights

   462 granted or affirmed under this  License.  For  example,  you  may  not  impose a

   463 license fee, royalty, or other charge for  exercise of rights granted under this

   464 License,  and  you  may  not  initiate  litigation  (including a  cross-claim or

   465 counterclaim in a  lawsuit)  alleging  that  any  patent  claim is infringed  by

   466 making, using,  selling,  offering for  sale, or  importing the  Program or  any

   467 portion of it.

   468 

   469 11. Patents.

   470 ------------

   471 

   472     A “contributor” is a copyright holder who authorizes use under this  License

   473 of the Program or a work on which the Program is based. The work  thus  licensed

   474 is called the contributor's “contributor version”.

   475 

   476     A contributor's “essential patent claims” are all  patent  claims  owned  or

   477 controlled by the contributor, whether already acquired or  hereafter  acquired,

   478 that would be infringed by some manner, permitted by this  License,  of  making,

   479 using, or selling its contributor version, but do not include claims that  would

   480 be infringed only as a consequence of further  modification of  the  contributor

   481 version. For purposes of this definition, “control” includes the right to  grant

   482 patent sublicenses in a manner consistent with the requirements of this License.

   483 

   484     Each contributor grants you a non-exclusive, worldwide, royalty-free  patent

   485 license under the contributor's essential patent claims,  to  make,  use,  sell,

   486 offer for sale, import and otherwise run, modify and propagate the  contents  of

   487 its contributor version.

   488 

   489     In the  following  three  paragraphs,  a  “patent license”  is  any  express

   490 agreement or commitment, however denominated, not to  enforce a patent  (such as

   491 an express permission to practice a patent or covenant not  to  sue  for  patent

   492 infringement). To “grant” such a patent license to a party means to make such an

   493 agreement or commitment not to enforce a patent against the party.

   494 

   495     If you convey a covered work, knowingly relying on a patent license, and the

   496 Corresponding Source of the work is not available for anyone to  copy,  free  of

   497 charge and under the terms of this License, through a publicly available network

   498 server or other readily accessible means, then you must  either  (1)  cause  the

   499 Corresponding Source to be so available, or (2) arrange to deprive  yourself  of

   500 the benefit of the patent license for this particular work, or (3) arrange, in a

   501 manner consistent with the requirements of this License, to  extend  the  patent

   502 license to downstream recipients.  “Knowingly relying”  means  you  have  actual

   503 knowledge that, but for the patent license, your conveying the covered work in a

   504 country, or your recipient's use  of  the  covered  work  in  a  country,  would

   505 infringe one or more identifiable patents in that country that you  have  reason

   506 to believe are valid.

   507 

   508     If, pursuant to or in connection with a single  transaction or  arrangement,

   509 you convey, or propagate by procuring conveyance of, a covered work, and grant a

   510 patent license to some of the parties receiving  the  covered  work  authorizing

   511 them to use, propagate, modify or convey a specific  copy of the  covered  work,

   512 then the patent license you grant is automatically extended to all recipients of

   513 the covered work and works based on it.

   514 

   515     A patent license is “discriminatory” if it does not include within the scope

   516 of  its  coverage,  prohibits  the  exercise  of,  or  is  conditioned  on   the

   517 non-exercise of one or more of the rights that are  specifically  granted  under

   518 this License. You may not convey a covered  work  if  you  are  a  party  to  an

   519 arrangement with a third party that is in the business of distributing software,

   520 under which you make payment to the third party based  on  the  extent  of  your

   521 activity of conveying the work, and under which the third party grants,  to  any

   522 of the parties who would receive the covered work  from  you,  a  discriminatory

   523 patent license (a) in connection with copies of the covered work conveyed by you

   524 (or copies made from those copies), or (b) primarily for and in connection  with

   525 specific products or compilations that contain  the  covered  work,  unless  you

   526 entered into that arrangement, or that patent  license  was  granted,  prior  to

   527 28 March 2007.

   528 

   529     Nothing in this License shall be construed  as  excluding  or  limiting  any

   530 implied license  or  other  defenses  to  infringement  that  may  otherwise  be

   531 available to you under applicable patent law.

   532 

   533 12. No Surrender of Others' Freedom.

   534 ------------------------------------

   535 

   536     If conditions are imposed on you  (whether  by  court  order,  agreement  or

   537 otherwise) that contradict the conditions of this License, they  do  not  excuse

   538 you from the conditions of this License. If you cannot convey a covered work  so

   539 as to satisfy simultaneously your obligations under this License and  any  other

   540 pertinent obligations, then as a consequence you may not convey it at  all.  For

   541 example, if you agree to terms that  obligate  you  to  collect  a  royalty  for

   542 further conveying from those to whom you convey the Program, the  only  way  you

   543 could satisfy both those terms and this License would  be  to  refrain  entirely

   544 from conveying the Program.

   545 

   546 13. Use with the GNU Affero General Public License.

   547 ---------------------------------------------------

   548 

   549     Notwithstanding any other provision of this License, you have permission  to

   550 link or combine any covered work with a work licensed under version 3 of the GNU

   551 Affero General Public License into a single combined work,  and  to  convey  the

   552 resulting work. The terms of this License will continue to  apply  to  the  part

   553 which is the covered work, but  the  special  requirements  of  the  GNU  Affero

   554 General Public License, section 13, concerning  interaction  through  a  network

   555 will apply to the combination as such.

   556 

   557 14. Revised Versions of this License.

   558 -------------------------------------

   559 

   560     The Free Software Foundation may publish revised and/or new versions of  the

   561 GNU General Public License from time to time. Such new versions will be  similar

   562 in spirit to the present version, but  may  differ  in  detail  to  address  new

   563 problems or concerns.

   564 

   565     Each version is given  a  distinguishing  version  number.  If  the  Program

   566 specifies that a certain numbered version of  the  GNU  General  Public  License

   567 “or any later version” applies to it, you have the option of following the terms

   568 and conditions either of that numbered version or of any later version published

   569 by the Free Software Foundation. If the  Program  does  not  specify  a  version

   570 number of the GNU General Public  License,  you  may  choose  any  version  ever

   571 published by the Free Software Foundation.

   572 

   573     If the Program specifies that a proxy can decide  which  future  versions of

   574 the GNU General Public License can be used,  that  proxy's  public  statement of

   575 acceptance of a version permanently authorizes you to  choose  that version  for

   576 the Program.

   577 

   578     Later license versions may give you  additional  or  different  permissions.

   579 However, no additional obligations are imposed on any author or copyright holder

   580 as a result of your choosing to follow a later version.

   581 

   582 15. Disclaimer of Warranty.

   583 ---------------------------

   584 

   585     THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY  APPLICABLE

   586 LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR  OTHER

   587 PARTIES PROVIDE THE  PROGRAM  “AS IS”  WITHOUT  WARRANTY  OF  ANY  KIND,  EITHER

   588 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE  IMPLIED  WARRANTIES OF

   589 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO  THE

   590 QUALITY AND PERFORMANCE OF THE PROGRAM IS  WITH YOU.  SHOULD THE  PROGRAM  PROVE

   591 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

   592 

   593 16. Limitation of Liability.

   594 ----------------------------

   595 

   596     IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN  WRITING  WILL

   597 ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM

   598 AS PERMITTED ABOVE,  BE  LIABLE  TO  YOU FOR  DAMAGES,  INCLUDING  ANY  GENERAL,

   599 SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY

   600 TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS  OF  DATA  OR  DATA  BEING

   601 RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE  OF

   602 THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH  HOLDER  OR  OTHER

   603 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

   604 

   605 17. Interpretation of Sections 15 and 16.

   606 -----------------------------------------

   607 

   608     If the disclaimer of warranty and limitation  of  liability  provided  above

   609 cannot be given local legal effect according to their  terms,  reviewing  courts

   610 shall apply local law that most closely approximates an absolute waiver  of  all

   611 civil liability in connection with the Program, unless a warranty or  assumption

   612 of liability accompanies a copy of the Program in return for a fee.

   613 

   614                       END OF TERMS AND CONDITIONS

   615 

   616 

   617                How to Apply These Terms to Your New Programs

   618 

   619     If you develop a new program, and you want it to be of the greatest possible

   620 use to the public, the best way to achieve this is  to  make  it  free  software

   621 which everyone can redistribute and change under these terms.

   622 

   623     To do so, attach the following notices to  the  program.  It  is  safest  to

   624 attach them to the start of each source  file  to  most  effectively  state  the

   625 exclusion of warranty; and each file should have at least the  “copyright”  line

   626 and a pointer to where the full notice is found.

   627 

   628   <one line to give the program's name and a brief idea of what it does.>

   629   Copyright (C) <year>  <name of author>

   630 

   631   This program is free software: you can redistribute it and/or modify

   632   it under the terms of the GNU General Public License as published by

   633   the Free Software Foundation, either version 3 of the License, or

   634   (at your option) any later version.

   635 

   636   This program is distributed in the hope that it will be useful,

   637   but WITHOUT ANY WARRANTY; without even the implied warranty of

   638   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   639   GNU General Public License for more details.

   640 

   641   You should have received a copy of the GNU General Public License

   642   along with this program.  If not, see <http://www.gnu.org/licenses/>.

   643 

   644 

   645 Also add information on how to contact you by electronic and paper mail.

   646 

   647 

   648     If the program does terminal interaction, make  it  output  a  short  notice

   649 like this when it starts in an interactive mode:

   650 

   651   <program>  Copyright (C) <year>  <name of author>

   652   This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.

   653   This is free software, and you are welcome to redistribute it

   654   under certain conditions; type `show c' for details.

   655 

   656 

   657     The hypothetical commands `show w' and `show c' should show the  appropriate

   658 parts of the General Public License. Of course, your program's commands might be

   659 different; for a GUI interface, you would use an “about box”.

   660 

   661     You should also get your employer (if you work as a programmer)  or  school,

   662 if any, to sign a “copyright disclaimer” for the program, if necessary. For more

   663 information  on  this,  and  how  to  apply  and  follow  the   GNU   GPL,   see

   664 <http://www.gnu.org/licenses/>.

   665 

   666     The GNU General Public License does not permit  incorporating  your  program

   667 into proprietary programs. If your program is  a  subroutine  library,  you  may

   668 consider it more useful to permit  linking  proprietary  applications  with  the

   669 library. If this is what you want to do,  use  the  GNU  Lesser  General  Public

   670 License  instead of this License. But first, please read

   671 <http://www.gnu.org/philosophy/why-not-lgpl.html>.