[libvirt] make uninstall fails

Hey all, I just noticed that make uninstall from the git HEAD fails: rmdir /etc/sasl2/ rmdir: failed to remove `/etc/sasl2/': Directory not empty it's correct that /etc/sasl2 should not be removed, as it has other files in it, so I think this removal should be more targeted, although I haven't investigated what should be removed when uninstalling. Dave