[Libguestfs] [PATCH 0/4] Pass CPU vendor, model and topology from source to target.

This is tangentially related to: https://bugzilla.redhat.com/show_bug.cgi?id=1372668 The problem in that bug is that we didn't pass the source CPU model (Sandybridge in that case) through to the target RHV hypervisor. So when the Windows guest booted on the target it gives an error about CPU hardware being disconnected (although it otherwise boots and works fine). This patch series explores sending the CPU vendor, model and topology from the source to the target, where supported. It turns out that RHV doesn't seem to support this anyway, but other target hypervisors do. Rich.