updates to linbox-1.7.0, givaro-4.2.0, fflas-ffpack-2.5.0, rebuild sagemath

[tornaria]

This update is stalled in sagemath (see sagemath/sage#32959) and I don't have a particular reason to do it, but just to be ready. Arch linux uses the updated versions, and the patch needed for sagemath is quite small.

The 3 packages updated (givaro, fflas-ffpack, linbox) need a few small patches just to support i686 and are all taken from and merged upstream.

Testing the changes

• I tested the changes in this PR: very briefly

@dkwo : maybe you want to try this on aarch64.

[tornaria]

The build on x86_64 for a stupid transient reason:

=> fflas-ffpack-2.5.0_1: fetching distfile 'fflas-ffpack-2.5.0.tar.gz' from 'https://github.com/linbox-team/fflas-ffpack/releases/download/v2.5.0/fflas-ffpack-2.5.0.tar.gz'...
https://github.com/linbox-team/fflas-ffpack/releases/download/v2.5.0/fflas-ffpack-2.5.0.tar.gz: Service Unavailable
=> ERROR: fflas-ffpack-2.5.0_1: failed to fetch 'fflas-ffpack-2.5.0.tar.gz'.

[dkwo]

Let met try that. Btw, don't you want to revbump sage?

[dkwo]

Not too bad :) This is after rebuilding libtool and ntl, with xbps_check_pkgs=yes:

sage -t --warn-long 30.0 --random-seed=230775089920805747071539279191783974296 /builddir/sagemath-9.8/pkgs/sagemath-standard/build/lib.linux-aarch64-cpython-311/sage/groups/perm_gps/permgroup.py  # 2 doctests failed
sage -t --warn-long 30.0 --random-seed=230775089920805747071539279191783974296 /builddir/sagemath-9.8/pkgs/sagemath-standard/build/lib.linux-aarch64-cpython-311/sage/parallel/map_reduce.py  # Timed out
sage -t --warn-long 30.0 --random-seed=230775089920805747071539279191783974296 /builddir/sagemath-9.8/pkgs/sagemath-standard/build/lib.linux-aarch64-cpython-311/sage/sets/recursively_enumerated_set.pyx  # Timed out

Full log: https://paste.c-net.org/AddictPleasure

[tornaria]

This is ready, and the upstream PR is good now sagemath/sage#35612.

It may be better to do this when we upgrade to 10.0.

[tornaria]

This is supserseded by #43659