Introduction of separate lifecycle methods on stores for open/close/recover.
Change Upgraders responsibility to create the amqp standard exchanges when
upgrading from earlier store versions.

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-broker-bdb-ha2@1581288 13f79535-47bb-0310-9956-ffa450edef68