gh-108765: [TEST] Test combined Python.h changes

[vstinner]

PR created to test 4 PRs at once on buildbots:

• PR gh-108765: Python.h no longer includes <sys/time.h> #108775: Python.h no longer includes <sys/time.h>
• PR gh-108765: Python.h no longer includes <ieeefp.h> #108781: Python.h no longer includes <ieeefp.h>
• PR gh-108765: Remove old prototypes from pyport.h #108782: Remove old prototypes from pyport.h
• PR gh-108765: Python.h no longer includes <unistd.h> #108783: Python.h no longer includes <unistd.h>

• Issue: C API: Cleanup header files #108765

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @vstinner for commit 7531a55 🤖

If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again.

[vstinner]

So far, I didn't see any build error, not any new compiler warning, on buildbots which completed.

The buildbot worker which failed did fail because of known reasons, unrelated to this PR.

[vstinner]

I only created this draft PR to schedule buildbot jobs. I close it since I no longer need it.