xen update

[Kip Macy]

For any of you who might not be on -current or -hackers:

====================================

Basic Xen support for 32-bit in PAE mode is in CVS. Please see the
wiki for general information:

http://wiki.freebsd.org/FreeBSD/Xen

Please be forewarned that I am not claiming that this is
production-ready. There are many known limitations. If you would like
to take it for a test drive and report bugs please give it a spin.

Thanks,
Kip