Refactored Callback system in osg::Node, osg::Drawable, osg::StateSet and osg::StateAttribute to use a new osg::Callback base class.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14244 16af8721-9629-0410-8352-f15c8da7e697

src/osgGA/NodeTrackerManipulator.cpp

@@ -30,7 +30,7 @@ NodeTrackerManipulator::NodeTrackerManipulator( int flags )
 
 
 NodeTrackerManipulator::NodeTrackerManipulator( const NodeTrackerManipulator& m, const CopyOp& copyOp )
-    : osg::Object(m, copyOp),
+    : osg::Callback(m, copyOp),
       inherited( m, copyOp ),
       _trackNodePath( m._trackNodePath ),
       _trackerMode( m._trackerMode )