gh-81057: Move _Py_RefTotal to the "Ignored Globals" List

[ericsnowcurrently]

We can't move it to _PyRuntimeState because the symbol is exposed in the stable ABI. We'll have to sort that out before a per-interpreter GIL, but it shouldn't be too hard.

• Issue: [subinterpreters] Global C variables are a problem #81057

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[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM Raspbian 3.x has failed when building commit 0e081a0.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/424/builds/3129) and take a look at the build logs.
4. Check if the failure is related to this commit (0e081a0) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/424/builds/3129

Summary of the results of the build (if available):

== Tests result: ENV CHANGED ==

411 tests OK.

10 slowest tests:

• test_venv: 6 min 10 sec
• test_largefile: 5 min 47 sec
• test_asyncio: 3 min 54 sec
• test_multiprocessing_spawn: 3 min 35 sec
• test_concurrent_futures: 3 min 7 sec
• test_multiprocessing_fork: 2 min 39 sec
• test_gdb: 2 min 12 sec
• test_tokenize: 2 min 3 sec
• test_multiprocessing_forkserver: 1 min 55 sec
• test_logging: 1 min 32 sec

1 test altered the execution environment:
test_asyncio

21 tests skipped:
test_check_c_globals test_devpoll test_idle test_ioctl test_kqueue
test_launcher test_msilib test_peg_generator test_perf_profiler
test_startfile test_tcl test_tix test_tkinter test_ttk
test_ttk_textonly test_turtle test_winconsoleio test_winreg
test_winsound test_wmi test_zipfile64

Total duration: 27 min 11 sec

Click to see traceback logs

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Turn off this advice by setting config variable advice.detachedHead to false
HEAD is now at 0e081a089e gh-81057: Move _Py_RefTotal to the "Ignored Globals" List (gh-100203)
Switched to and reset branch 'main'
Objects/obmalloc.c:776:1: warning: ‘always_inline’ function might not be inlinable [-Wattributes]
776 | arena_map_get(pymem_block *p, int create)
|^~~~~~~~~~~~~make: *** [Makefile:1895: buildbottest] Error 3