cmake OPENSUBDIV_HAS_CLEW examples

PixarAnimationStudios/OpenSubdiv opensubdiv/CMakeLists.txt :421 

target_compile_definitions(${osd_target} INTERFACE OPENSUBDIV_HAS_CLEW)

lighttransport/tinyusdz src/osd/opensubdiv/CMakeLists.txt :393 

target_compile_definitions(${osd_target} INTERFACE OPENSUBDIV_HAS_CLEW)