ACCUMULO-118 merge to trunk

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1494759 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1288 remove unused and out of scope visibility interpreter

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1494764 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-935 remove unused/empty directories

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1494767 13f79535-47bb-0310-9956-ffa450edef68