Fixed double-to-float and int-to-float conversions raising warnings in VS2010
Fixed double-to-float and int-to-float conversions raising warnings in VS2010

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