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

[Neal Norwitz]

More important issues:
----------------------
test_modulefinder leaked [145, 145, 145] references, sum=435

Less important issues:
----------------------
test_file leaked [0, 0, 77] references, sum=77
test_smtplib leaked [-83, 8, -8] references, sum=-83
test_sys leaked [-21, -21, 42] references, sum=0
test_threading leaked [48, 53, 43] references, sum=144
test_threadsignals leaked [0, 0, -8] references, sum=-8