[clang] [clang][modules] Print library module manifest path. (PR #76451)

[Mark de Wever via cfe-commits]

mordante wrote:

> (This is another example that the github review can't work well with the reverted patches...)
> 
> @mordante I think you can add `// REQUIRES: x86-registered-target` to the test if @kaz7 can't respond quickly. It will skip the test on targets other than x86. And it should keep the CI green and enable us to backport this clang18.
> 
> We can still improve this later.

I've created https://github.com/llvm/llvm-project/pull/82160 as you suggested.

https://github.com/llvm/llvm-project/pull/76451