Comment 3 for bug 1176159

Scott, what would you think about this. This isn't really a backport but would seem to do what I was thinking about inside a Xen domU. That should get verified against a cloud-init deployment somewhere else (which uses grub-legacy-ec2, if this exists). The one part that could affect other places is basically the change of not having a separation between xen-kernel or not (because actually xen supported does not mean it is not usable elsewhere).