A few changes that would likely raise some questions if not otherwise explained:
1. It looks like the Hadoop 1.0 line doesn't have the Configuration#unset method which I was using. I might be able to come up with an alternative way to address it, but I figured I'd test the waters to see if there are any reasons to not just upgrade the dependency.
2. Upped ZooKeeper version from 3.4.4 to 3.4.5 because I, for the life of me, couldn't get Accumulo's standalone "minicluster" testing harness (used in AccumuloPigClusterTest) to work with 3.4.4. By the looks of ZooKeeper's release page, 3.4.4 might have been a bad release (as they don't have it listed on the prominently).
3. I'm a Maven person so I tried my best to do the right thing with Ant+Ivy. In the end, I got the dependencies I needed, but I'm not sure if I did it the "right" way.
Overall, this is still very much a bare-bones implementation. I wanted to make sure I have a good basic set of tested functionality before getting into new functionality/usability. Feedback is greatly appreciated