[issue19655] Replace the ASDL parser carried with CPython

[Eli Bendersky]

Eli Bendersky added the comment:

Stefan, you need to run `make touch` if you want to avoid rebuilding. See #15964 for more details.

[all bots run `make touch` before building now]

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19655>
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