[PATCH] util: document we want Python type mapping to be temporary

[Jun Wu]

It should be PATCH 3 of the 
[PATCH 1 of 2] parsers: return NULL from PyInit_parsers on Python 3

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Excerpts from Pierre-Yves David's message of 2016-10-08 23:38:46 +0200:
> 
> On 10/08/2016 07:16 PM, Gregory Szorc wrote:
> > # HG changeset patch
> > # User Gregory Szorc <gregory.szorc at gmail.com>
> > # Date 1475947010 -7200
> > #      Sat Oct 08 19:16:50 2016 +0200
> > # Node ID d15d8ac73cfd2d1ddbd443262ccad9c68ee69406
> > # Parent  266ad9c9faa524a8b3f473c924db409681cb205e
> > util: document we want Python type mapping to be temporary
> >
> > I think remapping Python C API types and functions is not a great
> > approach. I'd prefer this whole #ifdef disappeared. Add a comment
> > so we don't forget about it.
> 
> I cannot find anywhere to apply this. This code does not seems to exists 
> in our current public repository. Am I missing something?
>