[clang] [llvm] [clang][python][test] Move python binding tests to lit framework (PR #146844)

[Aaron Ballman via llvm-commits]

AaronBallman wrote:

> Thansk for the explainer! That gives me something to test, I will try a cross-compile with GCC and see if I can reproduce it locally.
> 
> > It's not immediately obvious to me why the host compiler would make any difference on this particular PR ...
> 
> We are changing how the Clang-Python bindings are tested, and in the process revisiting which platforms are marked as `XFAIL` and `UNSUPPORTED`. system-z was previously unsupported, and moving it to `XFAIL` led to the issues you see here. So the failure isn't so much caused by something introduced in this PR, it's probably been failing for years but just wasn't tested. If I can't find a way to resolve this, I'll probably just mark it as `UNSUPPORTED` again

Ah, that makes sense, thank you for the explanation! I think UNSUPPORTED is a reasonable option.

https://github.com/llvm/llvm-project/pull/146844