Upgrade gsl to 2.6

[mkoeppe]

Out since August 2019 - http://savannah.gnu.org/forum/forum.php?forum_id=9530

https://ftp.gnu.org/gnu/gsl/gsl-2.6.tar.gz

CC: @sagetrac-tmonteil

Component: packages: standard

Keywords: upgrade, gsl

Author: Samuel Lelièvre

Branch/Commit: 9f4881d

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/29483

[slel]

New commits:

9f4881d

#29483: Upgrade: gsl 2.6

[slel]

Changed keywords from none to upgrade, gsl

[slel]

Commit: 9f4881d

[slel]

Branch: public/29483-upgrade-gsl

[slel]

Author: Samuel Lelièvre

[mkoeppe]

comment:4

Next step... push the current develop to your sage fork on GitHub, and then do git tag ci-gsl-29483 on the branch of the ticket and push the tag to your sage fork

[slel]

comment:5

Here we go: https://github.com/slel/sage/tree/ci-gsl-29483

[mkoeppe]

comment:6

Great, and your GH actions are already running: https://github.com/slel/sage/actions

[mkoeppe]

comment:7

I recommend to put the URL(s) of the most interesting actions runs (in this case, perhaps https://github.com/slel/sage/actions/runs/216181767 and https://github.com/slel/sage/actions/runs/216181769) in the Reviewer field on the Trac ticket. This makes it easy to see them in ticket lists.

[slel]

Reviewer: https://github.com/slel/sage/actions/runs/216181767, https://github.com/slel/sage/actions/runs/216181769

[mkoeppe]

Changed reviewer from https://github.com/slel/sage/actions/runs/216181767, https://github.com/slel/sage/actions/runs/216181769 to Matthias Koeppe

[mkoeppe]

comment:9

Looking good

[vbraun]

Changed branch from public/29483-upgrade-gsl to 9f4881d