Try to clean up the frametime global.
fix some quirks with r_dynamic -1
Added scr_fov_mode cvar to control whether the fov is defined relative to horizontal, vertical, or guessed.
fix a few fteqcc bugs
tab completion for the gamedir command.
fix the savegame_legacy command. it wasn't entirely compatible.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5254 fc73d0e0-1445-4013-8a0c-d673dee63da5
