Make a few more LLVM headers parsable as standalone headers.

Fix some problems with the hidden copy constructors for
ImmutableMap/ImmutableSet found by Clang++.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86186 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/ImmutableSet.h

@@ -988,8 +988,8 @@ public:
     BumpPtrAllocator& getAllocator() { return F.getAllocator(); }
 
   private:
-    Factory(const Factory& RHS) {}
-    void operator=(const Factory& RHS) {}
+    Factory(const Factory& RHS); // DO NOT IMPLEMENT
+    void operator=(const Factory& RHS); // DO NOT IMPLEMENT
   };
 
   friend class Factory;