ACCUMULO-973 Removed unused import warnings.
ACCUMULO-971 Fixed minor javadoc errors on return tags.


git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1437239 13f79535-47bb-0310-9956-ffa450edef68
re #ACCUMULO-967 - Add addAuths command



git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1437247 13f79535-47bb-0310-9956-ffa450edef68