bug#35909: 27.0.50; Speed up untarring (and hence package installation)

[Eli Zaretskii]

> From: Noam Postavsky <npostavs@gmail.com>
> Date: Sat, 25 May 2019 20:24:46 -0400
> 
> +Optional argument @var{suffix} is a string to be displayed after
> +@var{reporter}'s main message and progress text.  If REPORTER is a
                                                        ^^^^^^^^
@var{reporter}

Thanks.