gcc-14 has "-Werror=implicit-function-declaration" enabled by default.
crfsuite uses posix_memalign which only gets defined when _POSIX_C_SOURCE is
defined, so make sure the flag is set when compiling crfsuite.

On the other hand, openSUSE Tumbleweed has _POSIX_C_SOURCE defined
in pyconfig.h, so you must not add "-D_POSIX_C_SOURCE" when compiling
the python binding source code. So add it only for the subdir crfsuite.

On debian bookworm, distutils invokes gcc as x86_64-linux-gnu-gcc, so allow
command line elements ending in "-gcc" as well as command line elements being
exactly "gcc".

Bumps the github_actions group with 1 update in the /.github/workflows directory: [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/download-artifact` from 3 to 4.1.7
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4.1.7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  dependency-group: github_actions
...

Signed-off-by: dependabot[bot] <support@github.com>

…t-github/workflows/github_actions-14598a9f5f

Bump actions/download-artifact from 3 to 4.1.7 in /.github/workflows in the github_actions group across 1 directory

modernize code and packaging, and make package installable from cython source

Use gcc-specific _compile method for triplet-gcc as well

Define _POSIX_C_SOURCE for crfsuite source files

Bumps the github_actions group with 1 update in the /.github/workflows directory: [pypa/gh-action-pypi-publish](https://github.com/pypa/gh-action-pypi-publish).


Updates `pypa/gh-action-pypi-publish` from 1.8.10 to 1.13.0
- [Release notes](https://github.com/pypa/gh-action-pypi-publish/releases)
- [Commits](pypa/gh-action-pypi-publish@v1.8.10...v1.13.0)

---
updated-dependencies:
- dependency-name: pypa/gh-action-pypi-publish
  dependency-version: 1.13.0
  dependency-type: direct:production
  dependency-group: github_actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>