Added support for crease buffer to subdivmesh.
Fixed memory hole in subdivmesh.
hard creases are working
smooth creases are working
fractional crease weights work
bugfix, code works again with no crease buffer set
simplicications in 1ring gathering out of corner 1rings
simplicications in 1ring gathering out of corner 1rings
cleanups in CatmullClarkRing1::init
Using refactored formula to calculate vertex points.
cleanups
cleanups
cleanups
cleanups