mergeq_merge
err = mergeq_merge(mqp, ctf_merge_types, NULL, (void **)&final, &merr);
extern int mergeq_merge(mergeq_t *, mergeq_proc_f *, void *, void **, int *);
ret = mergeq_merge(mqp, mqt->mq_proc, NULL, &out, &err);