gh-101907: Removes use of non-standard C++ extension from Include/cpython/code.h by zooba · Pull Request #101909 · python/cpython

I agree they're useful, but I don't need to be convinced. We have to win over the C++ committee 😄 And then wait a decade for it to be generally available in all the compilers we support.

Incidentally, I noticed the SET macro, so I fixed it and am switching the assignments to use that.