Accumulo 802

Here's my updates so far. Fixed the configuration problem with renaming to a new namespace. Clonetable doesn't work because I changed it to keep from copying namespace properties over to a table, which revealed a bug. So clonetable won't work until ACCUMULO-1565 is fixed which also means a few tests fail right now. Also added the ability to clone a namespace...which depends on cloning a table so it doesn't work either.