gh-132775: Add _PyCode_GetVarCounts() by ericsnowcurrently · Pull Request #133128 · python/cpython

The change broke the s390 builds, so I'm reverting it while I investigate.

This reverts commit 94b4fcd.

This reverts commit 811edcf (gh-133232), which itself reverted the original commit 811edcf (gh-133128).

We reverted the original change due to failing s390 builds (a big-endian architecture).
It ended up that I had not accommodated op caches.

This reverts commit 811edcf (pythongh-133232), which itself reverted the original commit 811edcf (pythongh-133128).

We reverted the original change due to failing s390 builds (a big-endian architecture).
It ended up that I had not accommodated op caches.