bug#26973: 26.0.50; sleep-for behavior changes with global-auto-revert-mode enabled

[Eli Zaretskii]

> Cc: 26973@debbugs.gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Mon, 22 May 2017 01:38:31 +0300
> 
> BTW, accept-process-output also seems broken in similar scenarios.

Of course: both accept-process-output and sleep-for call the same
low-level API.

I hope it isn't something related to threads...