NO-JIRA: Test and logging fixes

- Enable source file:line logging option for all tests
- Log file:line in python source correctly
- Fix python tests to use module name instead of __main__

git-svn-id: https://svn.apache.org/repos/asf/qpid/dispatch/trunk@1633674 13f79535-47bb-0310-9956-ffa450edef68