If you are working on the buildinstall scripts, you can pass the
--localscripts option to buildinstall to force it to use the scripts
from the current directory rather than downloading the anaconda RPM
from the repo you specify, unpacking it, and using the scripts from
there.

Update the efi image creation code to reflect what we've actually been using
for two plus months.

BUILDARCH is now i586, but mk-images is internally mapping that
to i386. If mk-images and maketreeinfo.py disagree about the arch,
we end up with an invalid treeinfo file - the "arch" value won't
match any images-$arch section. And then virt-install and other
things can't find kernel images and stuff goes kaboom.

Therefore: explicitly pass BASEARCH to mk-images, rather than relying
on the implicit mapping therein, and pass the same value to
maketreeinfo.py.

Caveat #1: If the brand package doesn't exist, buildinstall will fail

Caveat #2: If the brand package has uppercase characters in it's name,
           it needs to provide ${brand}-{release,logos} in lowercase or
           yum thinks the package doesn't exist and buildinstall will fail

An additional patch may be necessary to:
1) check for ${brand}-{release,logos}
2) if those do not exist, fall back by setting the brand to "generic"

This will need to happen *after* the YUM configuration file has been
written, but before upd-instroot is executed.

Signed-off-by: David Cantrell <dcantrell@redhat.com>

To make the installation image files more clear and since
we have removed minstg2.img, rename stage2.img to
install.img.