bug#39502: [PATCH] Use one src status -a call for vc-src-dir-status-files

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Wolfgang Scherer <Wolfgang.Scherer@gmx.de>,  39502@debbugs.gnu.org,
>   dgutov@yandex.ru
> Date: Sun, 09 Aug 2020 13:31:23 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> > You posted two versions. Maybe there will be further revisions.
> >> I am not planning on any :-). But I am still not sure, which master
> >> you mean. I have no write access to the repository.
> >
> > Can you describe a simple use case to test your patch, and tell what
> > are the differences between the situation before and after the patch?
> > Then I will try the changes, and install them if I see no problems.
> 
> Eli, this was in February.  Wolfgang spun a new version of the patch
> without the whitespace changes -- did you find time to test it?

I tried, but couldn't (for boring reasons unrelated to the patch).  I
don't want to block the changes, so it's okay to install them,
provided that Dmitry agrees.