Reverted change of Node::ParentList from being a vector<Node*> back to a vector<Group*>

examples/osgkeyboardmouse/osgkeyboardmouse.cpp

@@ -104,8 +104,7 @@ public:
                 pitr != parents.end();
                 ++pitr)
             {
-                osg::Node* parent = *pitr;
-                parent->removeChild(node);
+                (*pitr)->removeChild(node);
             }
         }
     }

examples/osgparticleeffects/osgparticleeffects.cpp

@@ -334,7 +334,7 @@ public:
                 // particle effect can be inserted into this.
                 osg::ref_ptr<osg::Node> hitNode = hit.nodePath.back();
                 osg::Node::ParentList parents = hitNode->getParents();
-                osg::Node* insertGroup = 0;
+                osg::Group* insertGroup = 0;
                 unsigned int numGroupsFound = 0;
                 for(osg::Node::ParentList::iterator itr=parents.begin();
                     itr!=parents.end();