ECL-20.4.24 has been released (on 2020/04/24)

https://common-lisp.net/project/ecl/posts/ECL-20424-release.html

We should update, as it will resolve some Maxima bugs, and is essential for resolving other Maxima bugs.

Tarball: see checksums.ini [upstream_url].
(To configure Sage to download from the upstream URL, use ./configure --enable-download-from-upstream-url)

Upstream: Fixed upstream, but not in a stable release.

CC: @rwst @kiwifb @jdemeyer @EmmanuelCharpentier @jpflori @antonio-rojas @timokau @saraedum @infinity0 @slel @tobihan @embray @orlitzky

Component: packages: standard

Keywords: upgrade, ecl

Author: Marius Gerbershagen, Nils Bruin, Dima Pasechnik, Erik Bray

Branch: f82c716

Reviewer: Dima Pasechnik, Nils Bruin, François Bissey, Emmanuel Charpentier, Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/22191