OS-3342 dlmgmtd needs to be mindful of lock ordering
OS-2608 dlmgmtd needs to record zone identifiers
OS-3492 zone_free asserts to its destruction when dlmgmtd has fallen
OS-3494 zoneadmd tears down networking too soon when boot fails
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>

*** 459,468 ****
--- 459,469 ----
          linkp->ll_class = class;
          linkp->ll_media = media;
          linkp->ll_linkid = dlmgmt_nextlinkid;
          linkp->ll_zoneid = zoneid;
          linkp->ll_gen = 0;
+         linkp->ll_tomb = B_FALSE;
  
          if (avl_find(&dlmgmt_name_avl, linkp, &name_where) != NULL ||
              avl_find(&dlmgmt_id_avl, linkp, &id_where) != NULL) {
                  err = EEXIST;
                  goto done;