Logging improvements

git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1647403 13f79535-47bb-0310-9956-ffa450edef68
NO-JIRA: Adjusted test timeouts.

git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1647404 13f79535-47bb-0310-9956-ffa450edef68
NO-JIRA: Removed some dead test code.

git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1647417 13f79535-47bb-0310-9956-ffa450edef68