bug#22881: 25.0.50; Add more granularity to `save-silently'

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Mon, 29 Jul 2019 15:25:19 +0200
> Cc: 22881@debbugs.gnu.org, bruce.connor.am@gmail.com
> 
> > Here's the part I don't want to have:
> >
> >     Saving file /usr/local/foo...
> >
> > Here's the part I want to keep:
> >
> >     Wrote /usr/local/foo
> 
> (I'm going through old Emacs bug reports that haven't received any
> response.)
> 
> Which reminds me -- that's a pretty odd set of messages.  Most places in
> Emacs, we use
> 
> Doing whatever...
> Doing whatever...done
> 
> Shouldn't we do that here, too?

These two lines come from very different places in the code.