Adjust the check for the check test framework to look for libcheck.so

instead of libcheck.a.

This change will be sent upstream.

--- libdnet-1.12/configure.in.orig	2015-05-07 08:14:49.583718066 -0700

+++ libdnet-1.12/configure.in	2015-05-07 08:17:24.526491068 -0700

@@ -131,22 +131,22 @@

      ;;

   *)

      AC_MSG_RESULT($withval)

-     if test -f $withval/include/check.h -a -f $withval/lib/libcheck.a; then

+     if test -f $withval/include/check.h -a -f $withval/lib/libcheck.so; then

         owd=`pwd`

         if cd $withval; then withval=`pwd`; cd $owd; fi

         CHECKINC="-I$withval/include"

         CHECKLIB="-L$withval/lib -lcheck"

-     elif test -f $withval/src/check.h -a -f $withval/src/libcheck.a; then

+     elif test -f $withval/src/check.h -a -f $withval/src/libcheck.so; then

         owd=`pwd`

         if cd $withval; then withval=`pwd`; cd $owd; fi

         CHECKINC="-I$withval/src"

         CHECKLIB="-L$withval/src -lcheck"

      else

-        AC_ERROR(check.h or libcheck.a not found in $withval)

+        AC_ERROR(check.h or libcheck.so not found in $withval)

      fi

      ;;

   esac ],

-[ if test -f ${prefix}/include/check.h -a -f ${prefix}/lib/libcheck.a; then

+[ if test -f ${prefix}/include/check.h -a -f ${prefix}/lib/libcheck.so; then

      CHECKINC="-I${prefix}/include"

      CHECKLIB="-L${prefix}/lib -lcheck"

      AC_MSG_RESULT(yes)