FreeNAS Code

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Fix FreeNAS build on 10-CURRENT.

The prescribed method of doing proper chroot/jail build envs is to follow the
snippet provided by ambrisko@ at
http://unix.derkeiler.com/Mailing-Lists/FreeBSD/current/2007-07/msg00597.html .
Our previous method was incomplete and thus failed when attempting to install
ports that used autoconf as the hacks in upstream r226{027,122,124} aren't
present in FreeBSD 8.2's source.

Besides, we should be walking, talking, and squawking our build with the
correct build target info, not the build system's target info.

Add firefly to the available packages for install with multimedia.

Make the number of connections passed to afpd tunable.

This addresses ticket 847.

pfsync isn't available on FreeNAS [yet].

Remove dupe GEOM_ELI kernel option.

Add pf and friends to the list of available modules to address ticket 236.

Mute diff output.

Enable kernel debugger support in FreeNAS. In particular:

1. Panic into the debugger at boot if it fails to properly boot into multiuser.
2. Panic hard and fast skipping the debugger at boot if it dies after multiuser has been up adn running.

Reasoning is that:

1. We want to avoid infinite panic loops at boot because of a configuration problem.
2. The user should be able to potentially rectify or report their panic issue at boot if one occurs.
3. Random panics after boot should (eventually) be dumped out to a permanent store and replayed at next boot, thus minimizing downtime in the event that it was a kernel problem that occurs sporadically, or occurs in memory/resource starvation scenarios, etc.

Resolve panic issue reported in ticket 883.

For anyone who needs xhci support, they really should use the new loader feature.