findmaprotation fix
support for per-texture smoothing groups
smoothing groups cleanup
fix premul blend mode
allow reuse/coop links within a model
offsetyaw cleanups
remove some more yaw+90 kluges
calclight vertical blendmap fix
mapmodel pitch and scale
change model pitch axis to +X instead of old weird -Y behavior that differed from the camera
model roll
mapmodel stdedit fixes
misc cleanups
mapmodel preloading fix