c++03 -> c++11 switch:

- use std versions of function, bind and ref
- OVERRIDE -> override
- NULL -> nullptr
- use std versions of random distributions

NOTE: this may be last revision that supports gcc-4.5

lib/JsonNode.cpp

@@ -140,7 +140,7 @@ void JsonNode::setType(JsonType Type)
 	if (type == Type)
 		return;
 
-	//Reset node to NULL
+	//Reset node to nullptr
 	if (Type != DATA_NULL)
 		setType(DATA_NULL);