ACCUMULO-2035 ACCUMULO-2025 I accidently made limitVersion always true instead of never true. Now proper.

Also split apart the Iterator and Constraints tests in NamespacesIT
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2029 root table errors go in zookeeper (for now), don\'t need to decode url-encoded parameters on the recv side, the server does that for you
Merge branch '1.6.0-SNAPSHOT'