Squashed commit of the following:

commit bb0aa56210332792c42dce0ed28ec136b1dfbff3
Author: Alan Field <afield@redhat.com>
Date:   Mon Jun 10 17:10:29 2013 -0400

    Updates to the random data generator

    * Add the ability to restrict the set of words to a pre-generated list and
    provide a way to share the list among the nodes in the cluster
    * Use the same Random object seed on all nodes in the cluster to generate the same list of words.