[PATCH] D53700: Support _Clang as a scoped attribute identifier

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman added reviewers: mclow.lists, EricWF, ldionne.
aaron.ballman added a comment.

Another option that @rsmith and I discussed today is perhaps using `__clang` or `clang__` as the identifier, but perhaps this will cause more confusion about where to put underscores than `_Clang` would. If there are other ideas that are more palatable for the identifier, that'd be great -- I am not strongly tied to a spelling.

Adding some libc++ maintainers to see if they have opinions on the identifier picked.


https://reviews.llvm.org/D53700