Martin Lueders requested to merge update_libxc_url into hotfix-14.1 Apr 09, 2024

Description

As tddft.org went offline, we needed to update some links, pointing to that domain.

News snippet

As tddft.org went offline, we needed to update some links, pointing to that domain.

Checklist

I have checked that my code follows the Octopus coding standards
I have added tests for all the new features added in this request.