[K12OSN] K12LTSP 4.2.1 EL pre-release

[Eric Harrison]

I uploaded pre-release ISOs of K12LTSP 4.2.1EL. I still need to do a
lot of testing, but this build *should* be pretty close to production-
quality.

The ISO images are built on CentOS 4.0. Shortly I will have instructions
on installing the K12LTSP 4.2EL packages on Red Hat EL AS4.0.

If you are so inclined to help with the quality assurance work, please
give this build a spin and report back any issues you run into!

    ftp://k12linux.mesd.k12.or.us/pub/K12LTSP/4.2.1EL/iso/
    rsync -Pav k12linux.mesd.k12.or.us::K12LTSP-EL/* .

-Eric