cad/calculix-ccx: Update to version 2.15.

• Update to the latest version. Changelog: http://www.dhondt.de/new_calc.htm

• Attempt to make the build reproducible concerning the date in the executable.

• Drop temporarily) the taucs dependency. It brings a secondary dependency on metis4 which we are not packaging. We will bring taucs back when it depends on metis5

• Pet portlint.

PR: 234146
Approved by: thierry (mentor)