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_signal.py

@@ -1,5 +1,5 @@
 # Test the signal module
-from test_support import verbose, TestSkipped
+from test_support import verify, verbose, TestSkipped
 import signal
 import os
 import sys