Apply diff2.txt from SF patch http://www.python.org/sf/572113

(with one small bugfix in bgen/bgen/scantools.py)

This replaces string module functions with string methods
for the stuff in the Tools directory. Several uses of
string.letters etc. are still remaining.

Tools/idle/MultiScrolledLists.py

@@ -3,7 +3,6 @@
 # the right list displays the substructure of the selected item
 # in the left list.
 
-import string
 from Tkinter import *
 from WindowList import ListedToplevel
 from Separator import HSeparator