Fixed wxTreeCtrl.HitTest to return both the tree item as well as the
flags that clairify where the click was in relation to the item.
-Fixed problem in wxTreeCtrl.GetBoundingBox
+Fixed thread state problem in wxTreeCtrl.GetBoundingBox and
+GetSelections.
+
+Fixed some problems in OGL. Also wxShape.SetClientData and
+.GetClientData can now deal with Python objects.
+