[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_asynchat leaked [0, 130, -130] references, sum=0
test_file2k leaked [0, 0, 82] references, sum=82
test_popen2 leaked [-25, 29, -4] references, sum=0
test_smtplib leaked [82, 6, -88] references, sum=0
test_threading leaked [48, 48, 48] references, sum=144