This repo must be creted manually, which is not good for the
"one click" make qubes target.
The rpms for this repo are downloaded by revisor anyway from the
fedora repo and are cached in build/work/revisor-yumchace anyway,
so subsequent make iso attempts do not need to download them again.
This allows the iso build process to automatically download packages
from the fedora repo, and doesn't require the user to manaully
prepare a local F13 repository by copying packages from the installation DVD.
If a user is willing to make such preparations manually, however,
it is always possible to enable this repo easily.
This reverts commit ae81c85ea4.
Apparently this break way too many things with the installer, such as:
1) makes the resulting ISO not having proper isoconfig and xen.gz installed
2) conflicts with kde packages
I spent some time trying to solve those issues (e.g. using exclude= added
to i686 repos), but without much success. Perhaps somebody with better
understanding of revisor/anaconda could do this one time...
