Merge pull request #167 from ramielrowe/master

More efficient old launches query
Merge pull request #168 from ramielrowe/master

Safely handling error notifications from glance
Added pidfile argument to the "status" command of the initscripts for worker and verifier
Merge remote-tracking branch 'upstream/master'
Fixed typo in worker/stacktach.sh
Merge pull request #169 from raghuvrao/master

Use the pidfiles while checking status of worker/verifier
Fail reconcile if no region found