cmake HAVE_PTHREAD_ATTR_GETSTACKSIZE examples

alibaba/AliSQL configure.cmake :551 

CHECK_FUNCTION_EXISTS (pthread_attr_getstacksize HAVE_PTHREAD_ATTR_GETSTACKSIZE)

arkdb/arkproxy configure.cmake :372 

CHECK_FUNCTION_EXISTS (pthread_attr_getstacksize HAVE_PTHREAD_ATTR_GETSTACKSIZE)

alibaba/AliSQLBackup configure.cmake :467 

CHECK_FUNCTION_EXISTS (pthread_attr_getstacksize HAVE_PTHREAD_ATTR_GETSTACKSIZE)