ax3l/pngwriter — pull request #42 by ax3l (2014-11-03 17:26:09+00:00)
Title: MacOSX: PNG Include Was Broken

- wrong var name, should be _DIRS since a long time:
https://github.com/Kitware/CMake/commit/df0f302485c6f93a473e1958830b69b9c165b01a#diff-75b9f97116a34c6419fe4975ac4d6b7b