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/appMesh.cpp

@@ -157,6 +157,7 @@ TSMesh* AppMesh::constructTSMesh()
 
    // Finish initializing the shape
    tsmesh->setFlags(flags);
+   tsmesh->updateMeshFlags();
    tsmesh->computeBounds();
    tsmesh->numFrames = numFrames;
    tsmesh->numMatFrames = numMatFrames;