FreeNAS Code

For some funky arse reason, subprocess.check_output with pipes doesn't work as expected (there were multiple errors with command line parsing that in reality shouldn't have been an issue). Let's hack together a real python based pipe instead of relying on subprocess.check_output by itself to do the right thing.

Also, let's pipe through stderr so that we can get some real diagnostic output if the latter command fails.

This has existed for a while because I wasn't able to upgrade an older system from the pre-8.2 switchover to an 8.2 branded image without this change, oddly enough.

This resolves ticket 996.

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.