[clang] Clang AST updates for more details (PR #152372)

[Jessica Clarke via cfe-commits]

https://github.com/jrtc27 requested changes to this pull request.

Having all these SEI comments isn't going to fly. Nor is deleting bits of existing tests. On top of that, if you're wanting to make significant changes to the AST, that may warrant an RFC. Not to mention that "one commit that does 7 enumerated things" is not a good way to seek review of things if it can be avoided.

https://github.com/llvm/llvm-project/pull/152372