[Python-3000] Removal of PyArg_Parse()

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    Neal> with Python/mactoolboxglue.c looking like it's low hanging fruit,

I already took care of the easy cases there, though I haven't checked it in
yet.

    Neal> The remaining 65 uses are in Mac modules.  I'm not sure if all of
    Neal> them are sticking around.  (That's a separate discussion we should
    Neal> have--which of the mac modules should go.)

As I understand it, these are generated by bgen.  Presumably we could change
that code and regenerate those modules.

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