bug#31311: 27.0; doc of `pcase'

[Eli Zaretskii]

> From: Thien-Thi Nguyen <ttn@gnu.org>
> Date: Sun, 27 May 2018 10:22:49 +0200
> Cc: 31311@debbugs.gnu.org
> 
> I'd like to merge that branch into ‘emacs-26’ immediately.  Any
> objections?

The tarball for 26.1 was already made, and was tested yesterday.  I
understand it will be uploaded tomorrow.

Is this deemed important enough to delay the release and ask Nicolas
to re-tar the release after updating from Git?  If not, I guess this
merge will have to wait for a couple of days and will make it into
26.2.

I'd like to take this opportunity to thank everybody who participated
in this effort.