This adds verbose debugging which can be turned on to figure out what is
going on. It also adds a broad exception handler in the worker thread
to avoid dying. If you're running this such that stderr doesn't go to a
log, it can be easy to miss the thread's death.
I wrote all this to try to diagnose #1283, which seems to maybe have
healed itself. But since I have it, I figure we might as well keep it
in case we have trouble in the future.
Like recorder, this component listens to all events and reports any
that it can to a graphite installation. This makes it easy to use
graphite for all your data collection and analysis. If you run
carbon-cache (the backend for graphite) on the local machine, no
configuration is required other than enabling the component.
For more info on graphite: http://graphite.wikidot.com/
