NO-JIRA: Make the MessageStore and DurableConfigurationStore stateless.  This changes
removes the StateManager and delegates the operational logging (open/close)
messages to the vhost.

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-broker-bdb-ha2@1582835 13f79535-47bb-0310-9956-ffa450edef68