Log Message:-----------Use "x is [not] None" conditionals to help speed things along.
Modified Files:-------------- fe/src: tracenull.py (r1.3 -> r1.4) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/fe/src/tracenull.py.diff?r1=1.3&r2=1.4)
