Description of problem:
If you select the xen package group, you end up without a non-xen kernel to boot
from.  I don't think this is appropriate; I'd rather get both to choose from,
lest the xen kernel not be able to boot at all, while a subsequent update might.

I'm not even sure the xen-hypervisor kernel should boot up by default.

Version-Release number of selected component (if applicable):
anaconda-10.92.4-1

How reproducible:
Every time

Steps to Reproduce:
1.Select the `xen' package group in the installer
2.Install
3.Try another install, with kickstart, and request the `kernel' package
  
Actual results:
After 2., the non-xen kernel was not even installed.  After 3, it is, but is not
the default.

Expected results:
Non-xen kernel should probably be installed, and should still be the default
unless requested otherwise.

Additional info: