[issue3660] reference leaks in test_distutils

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

It's not only the name, but a copy of the whole module dict just after
import (that's why reload(sys) takes you back the
sys.setdefaultencoding() function).

Actually I found a (hackish) way to clean the 'extension' dict, but this
is not enough: the static variables in xxmodule.c cannot be cleared.
Shall we exclude this test from the leak hunter?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3660>
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