Decal system

docs/gen-entity.js

proj/sxanim/vs2013/sxanim.vcxproj

proj/sxanim/vs2013/sxanim.vcxproj.filters

proj/sxgame/vs2013/sxgame.vcxproj

proj/sxgame/vs2013/sxgame.vcxproj.filters

proj/terrax/vs2013/terrax.vcxproj

proj/terrax/vs2013/terrax.vcxproj.filters

source/anim/AnimatedModelProvider.cpp

source/anim/AnimatedModelProvider.h

source/anim/Decal.cpp

source/anim/Decal.h

source/anim/DecalProvider.cpp

source/anim/DecalProvider.h

source/anim/DynamicModel.cpp

source/anim/DynamicModel.h

source/anim/DynamicModelProvider.cpp

source/anim/DynamicModelProvider.h

source/anim/ModelOverlay.cpp

source/anim/ModelOverlay.h

source/anim/StaticModelProvider.cpp