Add face varying macros for loop subdivision
Add face varying macros for loop subdivision

anshuarya/OpenSubdiv,lookup1980/OpenSubdiv,nyotis/OpenSubdiv,poljere/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,c64kernal/OpenSubdiv,poljere/OpenSubdiv,jcowles/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,takahito-tejima/OpenSubdiv-exp,takahito-tejima/OpenSubdiv,anshuarya/OpenSubdiv,c64kernal/OpenSubdiv,xldeveloper/OpenSubdiv,c64kernal/OpenSubdiv,takahito-tejima/OpenSubdiv,shengfuintel/OpenSubdiv,takahito-tejima/OpenSubdiv,poljere/OpenSubdiv,shengfuintel/OpenSubdiv,anshuarya/OpenSubdiv,lookup1980/OpenSubdiv,shengfuintel/OpenSubdiv,xldeveloper/OpenSubdiv,nyotis/OpenSubdiv,lookup1980/OpenSubdiv,jcowles/OpenSubdiv,nyotis/OpenSubdiv,xldeveloper/OpenSubdiv,jcowles/OpenSubdiv,takahito-tejima/OpenSubdiv-exp