HBASE-8846. Refactors the old exceptions back to their original packages.

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1508301 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8846. Continuation of the previous commit. Deletes the files from their previous locations.

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1508303 13f79535-47bb-0310-9956-ffa450edef68