* of PARSE_TIME_ERR_* on error. 't' is not modified on error.
*/
int parse_time_string (const char *s, time_t *t, const time_t *ref, int round);
* of PARSE_TIME_ERR_* on error. 't' is not modified on error.
*/
int parse_time_string (const char *s, time_t *t, const time_t *ref, int round);