HBASE-9693 Fix javadoc warnings

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1528938 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9686 More temporary test files are being left in /tmp/hbase-<user>


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1528984 13f79535-47bb-0310-9956-ffa450edef68