Ceph

What we're looking for here are basic tests like connect, send message, kill connection, send another message; and verify that all the received messages are correct.
These tests aren't going to involve any serious internal Pipe state, but will require at least a barebones MessengerDriver and TestDriver interface. The outline is to implement 3 orders and 4 state/event reports:
orders: connect to y; send message x to y; break connection to y
reports: new incoming connection from y; finished establishing connection to y; received message x from y; connection to y broke

I think the messenger tester may be at a point where we can call this bug satisfied.

This has been sitting in my issue area for a while and it's distracting, so I'm reassigning for review. :)