bug#25708: 25.1.91; Allow users to inhibit printing for 'emacsclient -c -t'

[Eli Zaretskii]

> From: peder@klingenberg.no (Peder O. Klingenberg)
> Cc: 25708@debbugs.gnu.org,  alexhutcheson@google.com
> Date: Mon, 20 Feb 2017 18:19:20 +0100
> 
> How about this patch instead of my previous one?

Looks good (but see minor comments below).  Let's wait for a few days
to give others a chance to comment.

> +/* Nonzero means don't print values returned from emacs. --quell */

Each comment should end with a period and 2 spaces.  Like this:

>  /* Nonzero means args are expressions to be evaluated.  --eval.  */


> +-u, --quell          Don't display non-error return values from the server\n\

Do we really need the "non-error" part here?  Errors don't manifest
themselves via return values, I think.

Thanks.