fix a lot of Tkinter imports
diff --git a/Demo/tkinter/guido/tkman.py b/Demo/tkinter/guido/tkman.py
index c84d889..52b6d03 100755
--- a/Demo/tkinter/guido/tkman.py
+++ b/Demo/tkinter/guido/tkman.py
@@ -6,7 +6,7 @@
 import os
 import string
 import re
-from Tkinter import *
+from tkinter import *
 from ManPage import ManPage
 
 MANNDIRLIST = ['/depot/sundry/man/mann','/usr/local/man/mann']