[clang] [Clang] [Sema] Allow non-local/non-variable declarations in for loop (PR #129737)

[Shafik Yaghmour via cfe-commits]

https://github.com/shafik commented:

Should this have updated: https://clang.llvm.org/c_status.html

Also it would have been nice to mention the paper number in the release notes, I am assuming there was a paper? 

CC @AaronBallman 

https://github.com/llvm/llvm-project/pull/129737