Merge topic 'FindPkgConfig-system-cflags' 252c66c697 FindPkgConfig: Tolerate PKG_CONFIG_SYSTEM_INCLUDE_PATH in environment 4507883135 Tests: Rename RunCMake.FindPkgConfig LIBRARY_PATH case to SYSTEM_PATH Acked-by: Kitware Robot <kwrobot@kitware.com> Acked-by: buildbot <buildbot@kitware.com> Merge-request: !8768