cmake HAVE_RDTSCLL examples

alibaba/AliSQL configure.cmake :658 

CHECK_FUNCTION_EXISTS(rdtscll HAVE_RDTSCLL)

arkdb/arkproxy configure.cmake :442 

CHECK_FUNCTION_EXISTS(rdtscll HAVE_RDTSCLL)

alibaba/AliSQLBackup configure.cmake :573 

CHECK_FUNCTION_EXISTS(rdtscll HAVE_RDTSCLL)