[Libosinfo] New virtio-win repo and isos

[Cole Robinson]

Hey all,

Wanted to give a heads up about a new repo with virtio-win RPMs. Isos are
still available for direct download, just at a different URL. All the details
are here:

https://fedoraproject.org/wiki/Windows_Virtio_Drivers

FWIW the rpm and iso now match the layout of what we ship with RHEL, and match
the content (except still no WHQL signature).

Not sure how interesting it is to libosinfo/boxes in its current form. But
it's a fresh base to start from if you have any ideas or suggestions about how
to improve things in this area.

The most obvious bit is keying in spice-guest-tools to this. Is
spice-guest-tools buildable with mingw? Generating a new spice-guest-tools
with every virtio-win build would be pretty cool

- Cole