Re: master d0c77a1: Remove some assumptions about timestamp format

[Eli Zaretskii]

> From: Michael Albinus <address@hidden>
> Date: Wed, 26 Sep 2018 11:24:51 +0200
> Cc: address@hidden
> 
> There is already invalid_timespec() in systime.h. What about the
> following patch?

If this goes in, please document time-equal-p and invalid-time in NEWS
and in the ELisp manual.

TIA