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

[Neal Norwitz]

More important issues:
----------------------
test_io leaked [237, 237, 237] references, sum=711
test_memoryio leaked [267, 267, 267] references, sum=801

Less important issues:
----------------------
test_popen2 leaked [0, 54, -54] references, sum=0
test_smtplib leaked [-88, 161, -161] references, sum=-88
test_sys leaked [-21, -21, 0] references, sum=-42
test_threading leaked [48, 48, 48] references, sum=144
test_threadsignals leaked [0, 0, -8] references, sum=-8
test_urllib2_localnet leaked [283, -283, 0] references, sum=0