Blender Git Loki

Cloth: split edges implemented partially

Currently splitting is done by BM_edge_split() but this is not ideal because we are working with triangulated meshes, so we would prefer the split edge function to split and triangulate that nearby area rather than the current approach of splitting first and then triangulating whole mesh after all the BM_edge_split() have been called.
TODO: need to figure out why split edges doesn't work for meshes with UVs that have angles other than 90 degrees.