[Python-checkins] Python Regression Test Failures refleak (2)

[Neal Norwitz]

More important issues:
----------------------
test___all__ leaked [1, 1, 1] references, sum=3
test_urllib2_localnet leaked [-280, 0, 0] references, sum=-280

Less important issues:
----------------------
test_smtplib leaked [188, -188, -88] references, sum=-88
test_threadedtempfile leaked [-104, 0, 0] references, sum=-104
test_threading leaked [48, 48, 48] references, sum=144