Sort headers in CMakelist

Author: ldionne

libcxx/include/CMakeLists.txt

@@ -216,9 +216,9 @@ set(files
   __atomic/is_always_lock_free.h
   __atomic/kill_dependency.h
   __atomic/memory_order.h
+  __atomic/support.h
   __atomic/support/c11.h
   __atomic/support/gcc.h
-  __atomic/support.h
   __atomic/to_gcc_order.h
   __bit/bit_cast.h
   __bit/bit_ceil.h