FreeNAS Code

Provide diagnostics so that a failed update can point out where the failure occurred.

let the GUI aware of the zpool guid

fix notifier.get_volume_status to prevent returning empty status for inexistent zpools

*cues 300* THIS IS MIDDLEWARE!!!!!

Remove a hardcoded path while I'm here too.

improve sync_disks logic a bit

be more careful with GPT over gsoftraid

gstripe need a special case handling

Fix typos found by pylint.

Squawk less like FreeNAS in syslog and more like the component that's being squawked from.

simplify label_disk (pointed out by gcooper)