CS9 builds are possible and xen-4.15.1 builds in el9

[Pry Mar <pryorm09@xxxxxxxxx>]

Hello xen-users,

I noticed that a centos-stream-9-x86_64 chroot is now in mock-configs.

That got me trying to build xen depends, and finally a noqemu build of
xen-4.15.1.

Ultimately I want to use these packages on AlmaLinux 9, once its released.

Here is the COPR repo with the xen packages:
https://copr.fedorainfracloud.org/coprs/prymar56/stream9-extra/builds/

Once epel-9 is released I will try a full qemu build. As of now there
is no qemu* support here.

regards,
PryMar56
 ##xen-packaging on OFTC