made getAllParents virtual in VirtualRobot::Node

git-svn-id: http://svn.code.sf.net/p/simox/code/trunk@281 042f3d55-54a8-47e9-b7fb-15903f145c44

VirtualRobot/Nodes/RobotNode.h

@@ -221,7 +221,7 @@ public:
 	/*!
 		Find all robot nodes whose movements affect this RobotNode
 	*/
-	std::vector<RobotNodePtr> getAllParents( RobotNodeSetPtr rns );
+	virtual std::vector<RobotNodePtr> getAllParents( RobotNodeSetPtr rns );
  
 	//! Return parent node
 	virtual RobotNodePtr getParent();