Added new Node::getParentalNodePaths() method.

Added better handling in computeIntersections(..) of nodes that are internal
to the scene graph, correctly accounting for the accumulated transforms.

Changed the EventVisitor so that it only traveses active children rather than
all children.

Updated wrappers.

src/osgGA/EventVisitor.cpp

@@ -18,7 +18,7 @@ using namespace osg;
 using namespace osgGA;
 
 EventVisitor::EventVisitor()
-:    NodeVisitor(EVENT_VISITOR,TRAVERSE_ALL_CHILDREN),
+:    NodeVisitor(EVENT_VISITOR,TRAVERSE_ACTIVE_CHILDREN),
     _handled(false)
 {
 }