hammer_set_cycle
hammer_set_cycle(&mirror.key_cur, mirror.tid_beg);
hammer_set_cycle(&mirror.key_cur,
hammer_set_cycle(&mirror.key_beg, sync_tid);
hammer_set_cycle(&mirror.key_beg, mirror.tid_beg);
hammer_set_cycle(&rebal.key_cur, 0);
hammer_set_cycle(&reblock.key_cur, 0);
hammer_set_cycle(&scan->prune.key_cur, 0);
void hammer_set_cycle(hammer_base_elm_t base, hammer_tid_t tid);