#9 Allow javascript constuctor using @JSON contribution

[Chandra]

This patch adds constructor property to JSON annoation which is used by serializer.

For instance
@JSON(constructor = "new opensocial.Person")
public class Person implements Serializable {
...
}

will serialize this as
new opesocial.Person({...}) instead of {....}.

[Chandra]

[Charlie Hubbard]

This produces invalid JSON. Embedding classes to be instantiated like this is a serious security hole. I could very easily get in the middle and send you a class to instantiate that would allow me to run remote code. For these two reasons I cannot accept this feature request and it will be closed.