* Updated to ZDoom 4172:
- Comment out star and bstar stuff in wi_stuff.cpp.
- Redo r4164 fix: Don't clear fake planes when clearing skybox planes.


git-svn-id: http://mancubus.net/svn/hosted/gzdoom/trunk@1535 b0f79afe-0144-0410-b225-9a4edf0717df