[issue22434] Use named constants internally in the re module

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Could you please make a review of any patch Antoine? This would help me to debug re engine. It doesn't matter which patch apply, with good chance all this will be changed before 3.5 release and may be not once.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22434>
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