Expose hasOwnProperty() through API.

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 71c61f9218a421e284b6023c5f058716e7c8017d..4ab1ec2b4f8c54c83f36f4ee2ecd53ddec1be599 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -1,4 +1,4 @@
-// Copyright 2007-2009 the V8 project authors. All rights reserved.
+// Copyright 2011 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:
@@ -1588,6 +1588,7 @@ class Object : public Value {
   V8EXPORT void SetPointerInInternalField(int index, void* value);
 
   // Testers for local properties.
+  V8EXPORT bool HasOwnProperty(Handle<String> key);
   V8EXPORT bool HasRealNamedProperty(Handle<String> key);
   V8EXPORT bool HasRealIndexedProperty(uint32_t index);
   V8EXPORT bool HasRealNamedCallbackProperty(Handle<String> key);