Check menuitem before calculating tag.
Check for INDEX file first before anything else when processing modules.
Hide references to mod_lock. In FreeBSD it is always acquired with the
provider lock held, so its use has no effect.
Add PCI IDs for HighPoint RocketRAID 4521, 3620, 3622 and 3640
controllers.  Update the hptiop(4) manual page to reflect this
as well as mentioning that some cards are already end-of-life.

Many thanks to Highpoint for providing this driver update.

MFC after:	1 day
Update hpt27xx(4) driver to address a problem reported by FreeNAS
user, where when more than one hpt27xx adapters are being used,
the "unit number" stays at 0.

Many thanks to HighPoint for providing this driver update.

MFC after:	1 day
Don't prevent the user from hanging their system by changing network
settings while NFS mounts are active; but DO warn them and make the
default action to do nothing. (thanks julian)