Parallelize cpplint in presubmit and fix usage of DISALLOW_* macros.

src/serialize.h

Index: src/serialize.h
diff --git a/src/serialize.h b/src/serialize.h
index 6efb8ee1d7c8774450b0876fac345a6544741c95..839bfc5618cc33c04b96a8d900c9e97c5b99291a 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -1,4 +1,4 @@
-// Copyright 2006-2009 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -581,6 +581,7 @@ class Serializer : public SerializerDeserializer {
   friend class ObjectSerializer;
   friend class Deserializer;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(Serializer);
 };