Revert 836ce31ce10e1e9f28ddf026643186cc4ebd46a3: the filesystem module cannot depend on cvar (q2wmap, for example, does not initialize cvar but relies on filesystem). These changes should be made to Fs_SetGame, and a special hook in Cvar_Init or something.
Fix a bug in the media loading systems where the initial media seed of 0 causes startup assets to not actually be registered. Set a seed as part of S_InitMedia / R_InitMedia.
Flush the file descriptors for the default Com_Print, Com_Debug, etc. implementations.