Fix mucked cards' position update

When menu->reposition is called, only the HUD windows were moved to
their new positions. The auxiliary windows used for mucked cards
remained where they were at the time the HUD instance was created. This
caused mucked cards to appear in wrong places after the poker table was
moved.

Split positioning code in Mucked.py to its own method. Now the same
routine that moves HUD windows to their new places also invokes code
to reposition auxiliary windows.

Now the mucked cards are displayed at correct screen coordinates too.

pyfpdb/Hud.py

@@ -181,6 +181,11 @@ class Hud:
             for i, w in enumerate(self.stat_windows.itervalues()):
                 (x, y) = loc[adj[i+1]]
                 w.relocate(x, y)
+
+        # While we're at it, fix the positions of mucked cards too
+        for aux in self.aux_windows:
+            aux.update_card_positions()
+
         return True
 
     def on_button_press(self, widget, event):