[issue14913] tokenize the source to manage Pdb breakpoints

[Éric Araujo]

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


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nosy: +georg.brandl
versions: +Python 3.4 -Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14913>
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