- added flag to Sdc MASK interface to interpret "face weights"
- updated Catmark and Bilinear schemes to be aware of new MASK flag
- added subdivision and limit masks for the Loop scheme
- subclassed Vtr::Refinement into QuadRefinement and TriRefinement
- updated tagging of components to be sensitive to applied scheme
- fixed some quad assumptions in FVar refinement to support N-sided
- internally generalized ::TopologyRefiner Interpolate() for <SCHEME>
