Updated TODO list.

Converted AnimationPath so it is now subclassed from osg::Transform::ComputeTransfromCallback()
so that it can be directly attached to the scene to move objects about.

Changed the osg::SateSet::setGlobalDefaults() so that is sets GL_DEPTH_TEST
to ON.

Added guards and creation of default helper classes in osgGLUT::Viewer and
osgUtil::SceneView so that sensible defaults are used when no settings
are used of osg::State/StateSet,osgUtil::RenderStage/RenderGraph/CullVisitor.

src/osg/State.cpp

@@ -33,7 +33,8 @@ void State::reset()
 
     _modeMap.clear();
     _modeMap[GL_DEPTH_TEST].global_default_value = true;
-
+    _modeMap[GL_DEPTH_TEST].changed = true;
+    
     // go through all active StateAttribute's, applying where appropriate.
     for(AttributeMap::iterator aitr=_attributeMap.begin();
         aitr!=_attributeMap.end();