[libvirt] [PATCH 0/5]: Logical backend fixes and cleanups

All, This series of 5 patches fixes a couple of issues with the logical backend implementation, and also extends the xml returned by find-storage-pool-sources-as logical to also return the <device>'s that a logical backend is made of. Patches 1 - 4 do the cleanup, while patch 5 implements the <device> addition to the find-storage-pool-sources. -- Chris Lalancette