[clang] [analyzer][CTU] Macro expansions for imported translation units (PR #176126)

[Balázs Benics via cfe-commits]

steakhal wrote:

Thank you for sticking around and trying hard to investigate our options.
I raised the question at https://discourse.llvm.org/t/getting-the-final-tokens-a-macro-expands-into/89721

I hope we get some answer there that could guide us how to proceed with this PR.

https://github.com/llvm/llvm-project/pull/176126