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/cvsfiles.py

@@ -14,7 +14,6 @@ import os
 import sys
 import stat
 import getopt
-import string
 
 cutofftime = 0
 
@@ -51,7 +50,7 @@ def process(dir):
     if cvsdir:
         entries = os.path.join(cvsdir, "Entries")
         for e in open(entries).readlines():
-            words = string.split(e, '/')
+            words = e.split('/')
             if words[0] == '' and words[1:]:
                 name = words[1]
                 fullname = os.path.join(dir, name)