[flang] [clang] [flang]Add support for -moutline-atomics and -mno-outline-atomics (PR #78755)

[Valentin Clement バレンタイン クレメン via cfe-commits]

clementval wrote:

If you think this is the right fix then you should push it to solve the buildbots or revert the initial commit.

https://github.com/llvm/llvm-project/pull/78755