IPFilter patched for SMP

[Darren Reed]

I've just committed some changes to IPFilter in FreeBSD-current that
remove the "needs giant" flag and enables fine grained locking.

I'd really like to hear back from anyone who can stress test this out
on a multi-cpu machine.  The locking used is the same as for Solaris
and IRIX, so I'm relatively confident it shouldn't cause any deadlocks
but I'd still like to see it tested.

Merry Christmas,
Darren