[Python-checkins] Python Regression Test Failures refleak (1)

[Neal Norwitz]

More important issues:
----------------------
test_io leaked [61, 61, 61] references, sum=183

Less important issues:
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test_popen2 leaked [-23, 0, 0] references, sum=-23
test_smtplib leaked [82, -82, 0] references, sum=0
test_sys leaked [0, 0, 80] references, sum=80
test_threadsignals leaked [-8, 0, 0] references, sum=-8
test_urllib2_localnet leaked [-120, -140, 146] references, sum=-114