Work around circular dep between Icon and Palette. I don't

like it though, we should get rid of the dep.
Fix palette bug which I introduced with the pylint changes.

sugar/graphics/palette.py

@@ -98,7 +98,7 @@ class MouseSpeedDetector(gobject.GObject):
 
     def _get_mouse_position(self):
         display = gtk.gdk.display_get_default()
-        return display.get_pointer()[1:2]
+        return display.get_pointer()[1:3]
 
     def _detect_motion(self):
         oldx, oldy = self._mouse_pos
@@ -737,7 +737,7 @@ class Invoker(gobject.GObject):
 
         if self._cursor_x == -1 or self._cursor_y == -1:
             display = gtk.gdk.display_get_default()
-            x, y = display.get_pointer()[1:2]
+            x, y = display.get_pointer()[1:3]
             self._cursor_x = x
             self._cursor_y = y