Fix for AMQ-4563: Changes the KahaDB store to use a more consistent key for message ids.  MessageId.toString can change depending on how the message was encoded.
Support storing the externally generated message id of a message in the MessageID class so that Selectors can operate against that external message id.

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1488353 13f79535-47bb-0310-9956-ffa450edef68
Part of AMQ-4563: Include the textView as part of the persisted fields in OpenWire 10.

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1488354 13f79535-47bb-0310-9956-ffa450edef68