Update rabbitmq to 3.1.0.

Notable changes:
 - eager synchronisation of mirror queue slaves;
 - automatic cluster partition healing;
 - improved statistics (including charts) in the management plugin;
 - many smaller new features, bug fixes and performance improvements.

See release notes for full changelog:

http://www.rabbitmq.com/release-notes/README-3.1.0.txt
Merge remote-tracking branch 'github/joyent/feature/miscfix/2012Q4' into joyent/release/2012Q4
Update joyent and wip submodules