some fixes/tweaks for the nolegacy builds.
r_skybox works mid-map again.
tweak the qc debugger to not do infinite loops so easily...
rewrote chunks of the d3d11 renderer to support q3 shaders a little more correctly. now runs quake3 acceptably.
add explicit culldistance option for terrain/.map maps. pvs will effectively cut off anything beyond this distance.
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4982 fc73d0e0-1445-4013-8a0c-d673dee63da5