Alex R ebdfd0e175 atomic: detect clang separately %!s(int64=4) %!d(string=hai) anos
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SDL_atomic.c ebdfd0e175 atomic: detect clang separately %!s(int64=4) %!d(string=hai) anos
SDL_spinlock.c f4eb7f329e spinlock: Favor gcc-style atomics over MSVC interfaces. %!s(int64=4) %!d(string=hai) anos