Merge pull request #2482 from ahoppen/ahoppen/rename-atomic-bool

Rename `AtomicBool.{h,c}` to `SwiftSyntaxAtomicBool.{h,c}`

Author: ahoppen

Sources/_AtomicBool/include/AtomicBool.h renamed to Sources/_AtomicBool/include/SwiftSyntaxAtomicBool.h

@@ -10,7 +10,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "AtomicBool.h"
+#include "SwiftSyntaxAtomicBool.h"
 
 AtomicBool atomic_bool_create(bool initialValue) {
   AtomicBool atomic;