Add some stuff for the histogram creator and the GA - a function to return all of the elements in a DRE matrix, and one to score an ordering with the DRE * distance metric.
Add some stuff for the histogram creator and the GA - a function to
return all of the elements in a DRE matrix, and one to score an
ordering with the DRE * distance metric.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome