Better __credits__.

Lib/tokenize.py

@@ -10,7 +10,8 @@ designed to match the working of the Python tokenizer exactly, except that
 it produces COMMENT tokens for comments and gives type OP for all operators."""
 
 __author__ = 'Ka-Ping Yee <ping@lfw.org>'
-__credits__ = 'first version, 26 October 1997; patched, GvR 3/30/98'
+__credits__ = \
+    'GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro'
 
 import string, re
 from token import *