Var/JSON changes

- JSON support for Dynamic Struct and Array
- added VarIterator
- modified behavior of empty Var

JSON/src/Handler.cpp

@@ -52,15 +52,16 @@ Handler::~Handler()
 }
 
 
-void Handler::comma()
-{
-}
-
-
-Dynamic::Var Handler::result() const
+Dynamic::Var Handler::asVar() const
 {
 	return Dynamic::Var();
 }
 
 
+Poco::DynamicStruct Handler::asStruct() const
+{
+	return Poco::DynamicStruct();
+}
+
+
 } } // namespace Poco::JSON