[libvirt] [RFC PATCH 0/8]: Domain Snapshot API

Hello, Here is the first set of RFC patches for the snapshot API. Note that this definitely isn't finished; in particular, we are going to be changing the semantic for virDomainCreateFromSnapshot, and there are still a couple of known outstanding bugs. Nevertheless, that will probably be pretty minor in terms of code, so we'd like to get review on the rest of these patches for now. I've broken the series down along lines that I believe will compile independently, though I haven't yet done a git-bisect to confirm. Unfortunately it leaves patch 3/8 as a monster patch implementing the skeleton and remote driver. The good news is that it is mostly mechanical. Suggestions for how to better split it up are welcome. Thanks go to Jirka for lots of code contribution to this series, and all of the others who took part in the discussion of this API. Comments are welcome. Chris Lalancette