bug#46236: 26.1; explicit the info files installation

[Eli Zaretskii]

> Date: Wed, 21 Apr 2021 12:32:38 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: Eli Zaretskii <eliz@gnu.org>, marmot-te@riseup.net, 
> 46236@debbugs.gnu.org, 
>     rms@gnu.org
> 
> A suggestion: when the info files bundled with Emacs cannot be found, 
> download them from info.gnu.org (after asking the user if they're okay 
> with that) and install them into ~/.emacs.d/info.

We already have the latest manuals at

  https://www.gnu.org/software/emacs/manual/emacs.html

but what you suggest will require to maintain several versions back,
which is a non-trivial complication of the release procedures that are
already quite complex and tedious.  So I don't think we should take
this issue to be our problem to that level.