cmake PLIBSYS_HAS_POSIX_SET_NAME_NP examples

saprykin/plibsys cmake/ThreadNameDetect.cmake :88

check_c_source_compiles ("
                     ${PTHREAD_HEADERS}

                     int main () {
                        pthread_set_name_np ((pthread_t) 0, \"thread_name\");
                        return 0;
                     }"
                    PLIBSYS_HAS_POSIX_SET_NAME_NP
                )