[PATCH 5 of 5 STABLE pypy] util: fix sortdict.update() to call __setitem__() on PyPy (issue5639)

[Augie Fackler]

On Wed, Aug 02, 2017 at 11:22:25PM +0900, Yuya Nishihara wrote:
> # HG changeset patch
> # User Yuya Nishihara <yuya at tcha.org>
> # Date 1501681879 -32400
> #      Wed Aug 02 22:51:19 2017 +0900
> # Branch stable
> # Node ID b05cb26a301c4495f518f7180a69389b839a1fed
> # Parent  2c94746eb01204a1c703d555f21ebec031ed74b7
> util: fix sortdict.update() to call __setitem__() on PyPy (issue5639)

queued, thanks