updated to version 1.50, build 75.

updated to version 1.50, build 75.
change log as best I can remember:
rewrote model loading and rendering
multi-pass colormapping on any model (NO UPLOADS!)
fullbrights on models (feature of new multi-pass model renderer)
rewrote texture management
rewrote texture uploading
heavily optimized static light sampling
fancy new crosshair
fixed network angle rounding (shots are fired where you're pointing, not down and to the right)
HL map hull sizes are supported (still sink into grates though)
removal of some commented out junk
other minor stuff I can't remember now

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@76 d7cf8633-e32d-0410-b094-e92efae38249