bug#35300: 27.0.50; emacsclient on remote sessions no longer works

[Eli Zaretskii]

> From: Óscar Fuentes <ofv@wanadoo.es>
> Date: Fri, 19 Apr 2019 03:54:29 +0200
> Cc: 35300@debbugs.gnu.org
> 
> My main concern about this is to ensure that any change that breaks
> functionality goes with prominent notes about the change and how to
> adapt to it. Showing just the standard error message in the output of
> emacsclient when it knows the probable origin of the problem is not user
> friendly. We must give a proper note about the existence of new modes of
> failure and explain (or at least hint) how to deal with them.

Feel free to suggest a more useful text, including for NEWS.

Thanks.