This patch removes all uses of "assert" in the regression test suite

and replaces them with a new API verify(). As a result the regression
suite will also perform its tests in optimization mode.

Written by Marc-Andre Lemburg. Copyright assigned to Guido van Rossum.

Lib/test/test_userstring.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 import sys, string
-from test_support import verbose
+from test_support import verify, verbose
 import string_tests
 # UserString is a wrapper around the native builtin string type.
 # UserString instances should behave similar to builtin string objects.