Xen 4.20 available, Xen 4.15 to be removed

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hello,
As some of you have noticed, Xen 4.20 packages are now available in
pkgsrc HEAD. I'm now using it for daily Xen tests:
https://largo.lip6.fr/~bouyer/NetBSD-tests/xen/

I noticed a minor issue: is seems that qemu-dm sometime fails to
register events watch, leading to domain creation failure. It's
transient, retrying it will work. It looks like a race condition, but
it will probably be hard to debug. I don't remember seeing this with 4.18
(domain creation would sometime fail too, but for different reasons).

Also, Xen 4.15 is EOL upstream for some time now, the packages will be removed
from pkgsrc after the next stable branch.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--