Merge pull request #60 from smokin-guns/master

Bunch of comment fixes
OpenGL2: Parallax corrected cubemap (cheaper trick)
Revert "DMA 44100Hz needs more memory for sound buffers"

This reverts commit 0e6632f464c08dcb76f26a52f33d97228e64fda1.

Cause crashes if com_soundMegs is 32.