[SP] Minor cgame fixes.
[SP] MD3 big endian fixes
[SP] Ghoul 2 big endian fixes
Merge pull request #534 from BSzili/master

Big endian fixes for the model loaders.
[MP] Fix 2D Screen Tint effects for certain powers/in lava/in slime/in water being too opaque.
[MP] Remove some cgame RMG code.
[SP] ROFF big endian fixes
[SP] ICARUS big endian fixes
[SP] Fixed R_LoadLightGridArray on big endian platforms
[MP] Remove unused functions from renderer.
[SP] big endian fix for non-streamed MP3 sounds
[SP] Remove unused functions from renderer.
[MP] Remove unused Com_ParseTextFile function(s).
[SP] Remove unused Com_ParseTextFile function(s).
Merge pull request #536 from BSzili/master

[SP] ICARUS/ROFF/lightgrid big endian fixes
[JK2SP] Merged the big endian ROFF/ICARUS fixes from SP
[SP] added a missing cast in G_ActivateBehavior
[JK2SP] added a missing cast in G_ActivateBehavior
[MP] added a missing cast in G_ActivateBehavior
[SP] Fixed lip-synching on big endian