[issue14053] Make Tools/scripts/patchcheck.py compatible with mercurial mqueues.

[Antoine Pitrou]

Changes by Antoine Pitrou <pitrou at free.fr>:


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nosy: +eric.araujo
versions: +Python 2.7, Python 3.2, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14053>
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