[clang] [clang] Mark some language options as benign. (PR #131569)

[Erich Keane via cfe-commits]

erichkeane wrote:

> I think this looks fine but I'd like @Bigcheese @erichkeane @AaronBallman to look at it too.

This looks fine as far as I can tell.  Though, I'm not sure I have sufficient knowledge to be comfortable enough with the implications to approve this. @Bigcheese and @ChuanqiXu9 might be the most knowledgeable.

https://github.com/llvm/llvm-project/pull/131569