rework cursor store sync w.r.t to index order. resolve issues with skipped dispatch and duplicate dispatch. https://issues.apache.org/jira/browse/AMQ-4485 https://issues.apache.org/jira/browse/AMQ-5266
give test more gc wiggle room - AMQ-4930
AMQ4677Test.testSendAndReceiveAllMessages - demoed the lack of reference increment for transacted send and the non completion of transacted futures in leveldb
reflect need for store to set messageId.setFutureOrSequenceLong for journaled jdbc