[Libguestfs] [PATCH 0/8] Miscellaneous cleanups to Windows registry code.

A very miscellaneous set of cleanups to how we handle the Windows registry in virt-v2v, firstboot, and inspection code. This should all be straightforward non-controversial refactoring. Some highlights: - Add a new mllib Registry module containing various utility functions that are currently scattered all around. - Only compute the software/system hive paths once during inspection, and make those paths available to the tools through new APIs. - Simplify parameter passing inside virt-v2v so we pass around fewer long lists of parameters. Rich.