Accumulo 802

I was able to get everything back together after your rebase problem. Here's my new changes.

Mostly fixed problems with my last patch. Started trying get RandomWalk to work with namespaces but didn't get very far. There was a problem I had with some integration tests being in the wrong directory. I moved them in this branch, but I don't know if you'll merge before you fix it yourself (just might cause a problem if we both changed them).