cmake HAVE_ATOMIC_CAS_64 examples

alibaba/AliSQL storage/innobase/CMakeLists.txt :224 

CHECK_FUNCTION_EXISTS(atomic_cas_64 HAVE_ATOMIC_CAS_64)

alibaba/AliSQLBackup storage/innobase/CMakeLists.txt :206 

CHECK_FUNCTION_EXISTS(atomic_cas_64 HAVE_ATOMIC_CAS_64)