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

[Yuya Nishihara]

On Sat, 08 Oct 2016 19:16:54 +0200, 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

Queued this, too.