[FIX] Remove dependency to libopenal.so -> libatomic.so.1 under Linux.

This appears to a be bug in openal-soft's CMakeLists.txt, that the
HAS_LIBATOMIC check always return success and let libopenal.so links
to libatomic.so.1. This looks unnecessary: not all use of <atomic>
requires linking to libatomic.so.

Will check with openal-soft team to clarify the use.

REF: https://stackoverflow.com/questions/30591313/why-does-g-still-require-latomic

deps/packages/o/openal-soft-alsa/xmake.lua

@@ -63,6 +63,9 @@ package("openal-soft-alsa")
                 table.insert(configs, "-DALSOFT_STATIC_LIBGCC=ON")
                 table.insert(configs, "-DALSOFT_STATIC_STDCXX=ON")
                 io.replace("CMakeLists.txt", "set(LINKER_FLAGS )", "set(LINKER_FLAGS \"-static-libstdc++\")", {plain = true})
+                -- Avoid linking to libatomic.so.1. Appears not needed
+                -- but original CmakeLists.txt always returns true.
+                io.replace("CMakeLists.txt", "set(EXTRA_LIBS atomic ${EXTRA_LIBS})", "set(EXTRA_LIBS ${EXTRA_LIBS})", {plain = true})
             end
             table.insert(configs, "-DLIBTYPE=SHARED")
         else