[issue21107] Add pgen.vcxproj to allow regenerating grammar files on Windows

[Zachary Ware]

Zachary Ware added the comment:

The patch is way out of date, pgen.vcxproj needs to be updated to match the rest of our projects.

If nobody else takes this over (and it is low priority for a reason!), I'll get back to it eventually.

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nosy: +steve.dower

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21107>
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