arch specific packages pulled in by pungi

[Doug Chapman]

When building an install image using pungi and the example rawhide-
fedora.ks that is provided we found that elilo does not get pulled in on
our ia64 builds.  For those not familiar with ia64 elilo is the
bootloader used instead of grub.

What is the best way to fix this?  For now we just added it to the
rawhide-fedora.ks we are using but I am wondering if there is a more
appropriate fix for packages like this that are required for boot.
Since I don't see grub as part of the example rawhide-fedora.ks supplied
with pungi I am wondering if there is some other mechanism pungi uses to
know to pull packages like this in.  If so that seems like the right way
to handle elilo.

This will also be an issue for x86 systems that boot with elilo.

thanks,

- Doug