Tkinter rename, step 2: fix imports and add stub modules.
diff --git a/Lib/idlelib/Debugger.py b/Lib/idlelib/Debugger.py
index a56c224..fa2a56b 100644
--- a/Lib/idlelib/Debugger.py
+++ b/Lib/idlelib/Debugger.py
@@ -1,7 +1,7 @@
 import os
 import bdb
 import types
-from Tkinter import *
+from tkinter import *
 from WindowList import ListedToplevel
 from ScrolledList import ScrolledList
 import macosxSupport