[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
[JK2SP] Fixed the ICARUS big endian mistakes
[MP] Removed CopyLittleShort and CopyLittleLong
[MP] Sound loader big endian fixes
[MP] ICARUS/ROFF big endian fixes
[MP] R_LoadLightGridArray big endian fix
[MP] Ghoul 2 big endian fixes
[MP] MD3 big endian fixes
[MP] Re-enabled invalid server info filtering.
Fixed issue involving extended ascii.
Moved location of check so that it prevents the number of players found from being increased if fake server is filtered.
Added cvar ui_browserFilterInvalidInfo to make it optional, defaults to on though.
[MP] Remove unused tr_arioche.cpp
[MP] Remove unused functions:
R_GetShaderByNum, R_CreateExtendedName, R_CopyShader, R_CreateBlendedStage, R_MergeShaders, and R_CreateBlendedShader.
[SP] Remove unused functions:
R_GetShaderByNum, R_CreateExtendedName, R_CopyShader, R_CreateBlendedStage, R_MergeShaders, and R_CreateBlendedShader.
[MP] MEM_DEBUG removal.
Merge pull request #538 from BSzili/master

More big endian fixes for SP and MP, fixed G_ActivateBehavior to work with older compilers
Revert "[MP] Removed CopyLittleShort and CopyLittleLong"

This reverts commit 9382be7457dd72f1946952bb1dd77ef71fcf17c4.
[MP] Add missing short/long swap copy functions.