bug#56641: Deprecate `lsh`

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Tue, 19 Jul 2022 10:44:18 -0400
> Cc: 56641@debbugs.gnu.org
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > The ELisp manual already says that ash is a better alternative, but
> > lsh has its niche,
> 
> When would I want to use `lsh' over `ash'?

When you want the results that lsh gives you.

They don't yield the same results in all situations.