- Relax the restriction on the member interfaces with LLAs.  Two or more
  LLAs on the member interfaces are actually harmless when the parent
  interface does not have a LLA.

- Add net.link.bridge.allow_llz_overlap.  This is a knob to allow LLAs on
  a bridge and the member interfaces at the same time.  The default is 0.

Pointed out by:	ume
MFC after:	3 days
Fix returning incorrect bio_resid value with failed BIO_DELETE requests.
Neither residual length reported for ATA/SCSI command nor one from another
BIO_DELETE request are in any way related to the value to be returned.
sin6 should be assigned before the loop.
Partially close race between calls of orphan() method from GEOM and close()
method from ZFS core, that reliably causes use-after-free panic if SSD vdev
detached during inititial erase.
Fix detection of arm ABIs

Submitted by:	andrew
Obtained from:	pkg git