bug#29108: 25.3; ERC SASL support

[Eli Zaretskii]

> From: Ulrich Mueller <ulm@gentoo.org>
> Date: Wed, 28 Jul 2021 18:59:34 +0200
> 
> There also is a fork of the repository on Github:
> https://github.com/suhailshergill/erc-sasl
> 
> Apparently it has no additional commits beyond the original repository
> and erc-sasl.el is identical to the one found at archive.org.
> 
> Looking at commit history, there are 4 commits in 2012 (all by
> Joseph Gay). Their parent is commit 9497cc9 which is also the tip of the
> ERC repository at https://git.savannah.gnu.org/cgit/erc.git.
> 
> Would this be enough for inclusion in Emacs, given that erc-sasl.el has
> a GPL license notice and that copyright papers for the author are on
> file (or at least message #13 says so)?

AFAIU, we'd need to hear from Joseph that he agrees to contribute his
code to Emacs.