gh-145616: Detect Android sysconfig ABI correctly on 32-bit ARM Android on 64-bit ARM kernel

[robertkirkman]

• When Python is running on 32-bit ARM Android on a 64-bit ARM kernel, os.uname().machine is armv8l. Such devices run the same userspace code as armv7l devices, so apply the same armeabi_v7a Android ABI to them, which works.

• Fixes pip install does not work in Python 3.13 on 32-bit ARM Android running on 64-bit ARM kernel #145616

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[mhsmith]

Thanks, I'll look at this in the next few days.

[robertkirkman]

I have provided additional follow-up information here

[mhsmith]

Thanks, this looks fine, but please also update the corresponding code in test_get_platform in test_sysconfig.py.

[robertkirkman]

Thank you for pointing that out, I didn't notice that code previously. I hope I've updated it correctly now.

[robertkirkman]

Also, pardon me for asking, but when you put the "needs backport to 3.13" and "needs backport to 3.14" labels on this, does that mean that I should open follow-up PRs afterward targeting those branches of Python, or will you do that?
I targeted the development branch which is, I suppose, Python 3.15. I'm aware that this patch would need slight editing to apply to Python 3.13 and that it would work when applied there, but I can do that if necessary.

[mhsmith]

No need, it will be done automatically by a bot when this PR is merged, which I hope @encukou can do now.