DomU/Dom0/Hypervisor boot on FC6 Tiger4/Montecito/Xen

[Yu, Fenghua]

XenU, Xen0, and Xen from latest rpms (2.6.16-1.2211_FC6) can boot on FC6
Tiger4/Montecito/Xen now.


To make this work:

1.	For Xen0 boot kernel panic, need to use newer cpio to generate
correct initrd. If you see kernel panic on /dev/root mount failure
during Xen0 boot, it is because of this issue.
2.	Xend causes Xen0 hang at the last boot phase. Seems xend doesn't
work well with python2.4. I use python2.3 as temporary w/a. Need to look
into this issue later.
3.	Other configurations changes.

Intel QA starts testing on FC6 IPF Xen now. In the mean time, I'm
looking into VTi now.

Thanks.

-Fenghua