[libvirt] [PATCH 1/3] Virtual network cleanup/bugfixes

[Laine Stump]

The first two patches remedy a bug found by Stefan Berger in the new
brAddInetInterface() function that resulted in the broadcast address
not being properly set. This is a regression from previous releases,
so it should be pushed prior to the upcoming release.

The third patch improves the API for a couple of functions that were
recently added, but does not change any behavior. I'd be happy pushing
it now or after the release.