Log Message:
-----------
Use Transaction.fatal for fatality detection.
Additionally, correct testPortalPersistence and use a ValueError subclass for
the isolated error test to avoid absolutely any possibility of mistakenly
passing the assertion.
Modified Files:
--------------
fe/src:
tracenull.py (r1.15 -> r1.16)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/fe/src/tracenull.py.diff?r1=1.15&r2=1.16)
fe/test:
tracenull.py (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/fe/test/tracenull.py.diff?r1=1.7&r2=1.8)