HBASE-10479 HConnection interface is public but is used internally, and contains a bunch of methods

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1566501 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10486: ProtobufUtil Append & Increment deserialization lost cell level timestamp

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1566505 13f79535-47bb-0310-9956-ffa450edef68