python - pq: Remove extra terminal states.

Log Message:
-----------
Remove extra terminal states. Failure can be determined based on the existence
of exc_info and error, so it was unnecessary.

Additionally, make Notice inherit from DictionaryType.

Modified Files:
--------------
    pq/src:
        client3.py (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/pq/src/client3.py.diff?r1=1.9&r2=1.10)
        element3.py (r1.9 -> r1.10)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/pq/src/element3.py.diff?r1=1.9&r2=1.10)
        transam.py (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/pq/src/transam.py.diff?r1=1.5&r2=1.6)
    pq/test:
        client3.py (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/pq/test/client3.py.diff?r1=1.5&r2=1.6)
        element3.py (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/pq/test/element3.py.diff?r1=1.4&r2=1.5)