cmake HAVE_ATOMIC_CAS_32 examples

alibaba/AliSQL storage/innobase/CMakeLists.txt :223 

CHECK_FUNCTION_EXISTS(atomic_cas_32 HAVE_ATOMIC_CAS_32)

Tokutek/mysql-5.5 storage/innobase/CMakeLists.txt :125 

CHECK_FUNCTION_EXISTS(atomic_cas_32 HAVE_ATOMIC_CAS_32)