[issue20294] Argument Clinic: add support for __init__

[Zachary Ware]

Zachary Ware added the comment:

Output looks good and I didn't see anything that scared me in the patch, though I can't pretend to fully understand 100% of it.  Builds on Windows, pickle tests pass, and nothing else is affected (that's checked in so far).  Looks good to me, as far as I can see.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20294>
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