[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 [-132, 0, 139] references, sum=7
test_cmd_line leaked [-25, 0, 0] references, sum=-25
test_file2k leaked [80, -80, 0] references, sum=0
test_smtplib leaked [88, 0, -88] references, sum=0
test_sys leaked [0, 42, -21] references, sum=21
test_threading leaked [48, 48, 48] references, sum=144
test_threadsignals leaked [-8, 8, -8] references, sum=-8