I have become a founding member of the Rolls Working Group for Rocks Clusters and have moved all my rolls to their website with full version control and bug tracking capabilities.
You can find the latest version of all the rolls on that site at http://rocks.stanford.edu
The rolls were developed as part of my job supporting the cluster at Missouri University of Science and Technology http://www.mst.edu
I plan on leaving the older version attached to this page for the time being, but they will be removed at some later date.