Tkinter rename, step 2: fix imports and add stub modules.
diff --git a/Lib/idlelib/ReplaceDialog.py b/Lib/idlelib/ReplaceDialog.py
index c8eb1c8..c8f6784 100644
--- a/Lib/idlelib/ReplaceDialog.py
+++ b/Lib/idlelib/ReplaceDialog.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 import SearchEngine
 from SearchDialogBase import SearchDialogBase