Add map16/map32/mapcomp/mapnocomp/animmapcomp/animmapnocomp

They're supported by RTCW SP, MP, and ET. ET doesn't have shaders that use them though.
Cleanup RTCW's extra map keyword code

glConfig.textureCompression is only set if the r_ext_compressed_textures cvar is enabled, so don't check here.
Lets go ahead and set token in the while loop, even though always returns the same address right now.