Use -latomic when using clang (server platform)
Use -latomic when using clang (server platform)

version of c9b3a00a63fafa546bf402e32fd21ebe7f274b43 for the server
platform

(cherry picked from commit 6a146d405c6c0070bfcfc312ec84f7006413239d)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot