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/scripts/xxci.py

@@ -9,7 +9,6 @@ import os
 from stat import *
 import commands
 import fnmatch
-import string
 
 EXECMAGIC = '\001\140\000\010'
 
@@ -57,7 +56,7 @@ def setup():
         f = open('.xxcign', 'r')
     except IOError:
         return
-    ignore[:] = ignore + string.split(f.read())
+    ignore[:] = ignore + f.read().split()
 
 def skipfile(file):
     for p in ignore: