bug#40909: eww: Add max width option similar to Man-width-max

[Eli Zaretskii]

> From: Stefan Kangas <stefan@marxist.se>
> Cc: larsi@gnus.org,  40909@debbugs.gnu.org
> Date: Mon, 27 Apr 2020 21:20:49 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Isn't shr-width enough to do what you want?
> 
> Oh, I had missed that it exists.  It's almost there, but its default
> is not 80.  Could we change that?

Isn't it enough to bind it for this display only? or change its
buffer-local value?

> Also, it's too bad that it didn't show up when I did the obvious
> thing: 'M-x customize-group RET eww RET' -- is there something that
> could be done about that?

shr is a separate package.