This is a hack. Should libvirt have a way to mark these VMs?
Note you'll only come across this problem if you run virt-manager as
root with libguestfs >= 1.20 on Fedora >= 18 (libguestfs using libvirt).
Now that virt-manager requires very modern versions of gtk, it's
quite unlikely that we will even run on a system with an old
libguestfs version, so don't bother checking versions.
Despite being a known quantity, autotools is so overkill for our needs,
so let's drop it and replace it with a much simpler and easy to customize
system.
