[clang] [clang][Itanium Mangle] Enable mangling of enclosing class for member… (PR #110503)

[Viktoriia Bakalova via cfe-commits]

VitaNuo wrote:

> Thanks.
> 
> Can you update the comment [here](https://github.com/llvm/llvm-project/blob/main/clang/include/clang/Basic/LangOptions.h#L242-L245) to mention this case?
> 
> And I think it is better to move the release note `Mangle friend function ...` from the `Bug Fixes to C++ Support` to `ABI Changes in This Version`.

Thank you, the comments should be addressed now.

https://github.com/llvm/llvm-project/pull/110503