Android buildbot should run `python -m test.pythoninfo`

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Currently, "aarch64 Android 3.x" buildbot worker "only" runs the test suite: https://buildbot.python.org/#/builders/1594/builds/4352. It doesn't run the "python -m test.pythoninfo" step.

pythoninfo is useful to debug test failures and collect build information. For example, I wanted to check if Android defines the __STDC_IEC_559__ C macro: I looked for iec_60559 in sys.float_info, but Android lacks pythoninfo data.

I had a look at Android/android.py and it seems like launching a single Python process is quite heavy. It unpack the Python package, launches "gradle" which download stuff, setup a logger, etc. So it seems like launching a second Python process just for python -m test.pythoninfo would be inefficient.

Instead, I propose adding a --pythoninfo option to python -m test so we can dump build information and run the test suite in a single command.

Linked PRs

• gh-146410: Add --pythoninfo option to regrtest #146413