Revert copy_reg -> copyreg rename.
diff --git a/Lib/pickle.py b/Lib/pickle.py
index ddb2c81..02a1b1d 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -1,7 +1,7 @@
 """Create portable serialized representations of Python objects.
 
 See module cPickle for a (much) faster implementation.
-See module copyreg for a mechanism for registering custom picklers.
+See module copy_reg for a mechanism for registering custom picklers.
 See module pickletools source for extensive comments.
 
 Classes:
@@ -27,8 +27,8 @@
 __version__ = "$Revision$"       # Code version
 
 from types import *
-from copyreg import dispatch_table
-from copyreg import _extension_registry, _inverted_registry, _extension_cache
+from copy_reg import dispatch_table
+from copy_reg import _extension_registry, _inverted_registry, _extension_cache
 import marshal
 import sys
 import struct
@@ -295,7 +295,7 @@
             self.save_global(obj)
             return
 
-        # Check copyreg.dispatch_table
+        # Check copy_reg.dispatch_table
         reduce = dispatch_table.get(t)
         if reduce:
             rv = reduce(obj)