changed conchars from 16-bit to 32-bit
added support for RGBI fg and bg colors
better support for ^8/^9 text codes
fix to echoish menu sounds
added plugin stuff for centerprints/server messages/chat messages, not finalized (?)
GL/SW color character functions improved (although neither handle transparent characters, and SW needs improvement with the palette remapping)
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@1750 fc73d0e0-1445-4013-8a0c-d673dee63da5