ACCUMULO-695 Support the old mapreduce API. This is a first cut. Some attempt was made to reuse code, but it may benefit from further consolidation. This will
need unit tests at some point.


git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1437818 13f79535-47bb-0310-9956-ffa450edef68