_gfortran_caf_deregister — Deregistering coarraysvoid caf_deregister (const caf_token_t *token, int *stat, char *errmsg,
int errmsg_len)
     | stat | intent(out) Stores the STAT=; may be NULL
 | 
| errmsg | intent(out) When an error occurs, this will be set
to an error message; may be NULL
 | 
| errmsg_len | the buffer size of errmsg.
      |