[issue767645] incorrect os.path.supports_unicode_filenames

[Florent Xicluna]

Changes by Florent Xicluna <laxyf at yahoo.fr>:


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components: +Tests
stage:  -> patch review
versions: +Python 2.7, Python 3.1, Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue767645>
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