[issue4755] Add function to get common path prefix

[Éric Araujo]

Changes by Éric Araujo <merwok at netwok.org>:


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nosy: +eric.araujo
title: Common path prefix -> Add function to get common path prefix
type: behavior -> enhancement
versions: +Python 3.3 -Python 3.1

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4755>
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