21029732 PKG_CONFIG_PATH should be included in CONFIGURE_ENV and BUILD_ENV 21029735 shared-macros should define service manifest and method macros 21093823 sample-manifest should omit or comment "standard" directories and certain files 21144358 configure scripts usually detect wrong host for 64-bit builds 21157847 shared-macros.mk instructions have a typo for studio c99 mode 22067225 common make-rules desired for simplifying makefiles 22067806 transforms needs expanding for desktop services

# stuff we drop from the proto area - not shipped
<transform file path=.+/lib/.+\.a -> drop>