[PATCH v4 0/2] MR10463: winemac: Replace OSAtomic functions with builtin __atomic counterparts.

[Marc-Aurel Zent (＠mzent)]

This fixes deprecated build warnings:

`wine/dlls/winemac.drv/cocoa_event.m:280:21: warning: 'OSAtomicDecrement32Barrier' is deprecated: first deprecated in macOS 10.12`

Also relaxes memory barriers where appropriate.

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  v4: winemac: Relax builtin __atomic memory barriers.
      winemac: Replace OSAtomic functions with builtin __atomic counterparts.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10463