Reset cheat cvars on cgame init in SP as well.
Move BASEGAME define to q_shared in SP.  Removed files.h usage from SP's sys_main.
Silence animation warning in MP for ROOT.
Removed now unused cvar from common.cpp in MP.
Change the comment line in MP's config file to reflect OpenJK and not original game.
Small cleanup in MP's cvar.cpp
Same as previous commit but for MP.
Plus migrate the mac bundle loading code to filesystem now that filesystem code is localized to files_*.cpp.