Deprecate bsddb for removal in Python 3.0.

Closes issue 3776.
Review by Nick Coghlan.
diff --git a/Lib/test/test_py3kwarn.py b/Lib/test/test_py3kwarn.py
index 7bfe1e5..780de74 100644
--- a/Lib/test/test_py3kwarn.py
+++ b/Lib/test/test_py3kwarn.py
@@ -305,7 +305,7 @@
                            'sunos5' : ('sunaudiodev', 'SUNAUDIODEV'),
                           }
     optional_modules = ('bsddb185', 'Canvas', 'dl', 'linuxaudiodev', 'imageop',
-                        'sv', 'cPickle')
+                        'sv', 'cPickle', 'bsddb', 'dbhash')
 
     def check_removal(self, module_name, optional=False):
         """Make sure the specified module, when imported, raises a