- Merged revision(s) 1481-1523 from trunk, updated to ZDoom r4120. This includes the software shader lighting mode, the fixes needed to play ZDCMP2, and the foo_DUMB update, among other things.

git-svn-id: http://mancubus.net/svn/hosted/gzdoom/branches/doom64@1524 b0f79afe-0144-0410-b225-9a4edf0717df