Hardware Skinning Support

- Supports GL, D3D9 & D3D11
- Extends vertex formats & shadergen to support blend indices and weights
- Adds basic support for using 4x3 matrices for shader constants
- Supports software fallback

Engine/source/ts/loader/tsShapeLoader.cpp

@@ -1229,6 +1229,7 @@ void TSShapeLoader::install()
    shape->tubeRadius = shape->radius;
 
    shape->init();
+   shape->finalizeEditable();
 }
 
 void TSShapeLoader::computeBounds(Box3F& bounds)