Add truncated QR with pivoting (Reference-LAPACK PR 891)

Fix older versions of gcc - missing __has_builtin, cpuid and no support of P10.

Merge release 0.3.25 back into develop to copy tag

Merge develop into release-0.3.0 for 0.3.25

Add OSX hw.cpufamily autodetection for Apple M3 as VORTEX

* Update Changelog.txt for 0.3.25

Fix empty function prototypes

Make vector orthogonalization more reliable (Reference-LAPACK PR 930)

Limit CI runs to pushes and pull requests on main repo

Apply rounding up to workspace calculations done with reals (Reference-LAPACK PR 904)

Change ?GECON to return INFO=1 if RCOND is NaN (Reference-LAPACK PR 926)

Add workaround for omp_get_max_threads hanging on FreeBSD/LLVM14

* Move ?GELQS and ?GEQRS from TESTING/LIN to DEPRECATED (Reference-LAPACK PR 900)

* Add f2c-converted versions of ?GELQS and ?GEQRS

Improve matcopy interface

Move clang/gfortran OpenMP dependency rewriting out of f_check

Enable autodetection of Zen 3/4 cpus as their AVX512 Intel counterparts

Put more build information into Makefile.conf_last

* rows = 0 or cols = 0 is now a legal input and
  takes quick return path
* Follow BLAS/LAPACK convention that the leading
  dimensions must be at least 1.

The `group` expression ensures that the cancel-in-progress
behavior is to only cancel if a new commit is pushed to the PR for
which the job is running, not other PRs.

This is a fairly standard snippet, used also in CI jobs for NumPy
and other projects.