[Libvirt-cim] [PATCH 0 of 5] KVM XML parsing and generation support

This set adds most of the support we'll need for parsing and generating KVM domain XML. It updates the xml_parse_test app for KVM and allows testing of generated xml. I've tested with PV, FV, and KVM domains and it works for me. The next step after this will be making VSMS aware of how to create a KVM dominfo from RASDs, which will allow us to actually define a domain with DefineSystem for KVM.