[Libvirt-cim] [PATCH 0 of 3] MigrationJob Indications

This set breaks CSMI into three indications that track the status of the migration job through its entire lifecycle. There might be a few rough spots in the main patch here, as a seemingly innocuous typo turned into two days of sfcb debugging. As a result, I'm a bit sick of looking at this thing, so if you see something that's not finished product quality, please point it out. I think the overall approach is fairly sound, since it's a pretty straightforward problem.