Add import_function method to test.test_support, and modify a number of
tests that expect to be skipped if imports fail or functions don't
exist to use import_function and import_module.  The ultimate goal is
to change regrtest to not skip automatically on ImportError.  Checking
in now to make sure the buldbots don't show any errors on platforms
I can't direct test on.
diff --git a/Lib/test/test_winsound.py b/Lib/test/test_winsound.py
index 1ed43c1..cba6ee6 100644
--- a/Lib/test/test_winsound.py
+++ b/Lib/test/test_winsound.py
@@ -2,10 +2,12 @@
 
 import unittest
 from test import test_support
-import winsound, time
+import time
 import os
 import subprocess
 
+winsound = test_support.import_module('winsound')
+
 
 class BeepTest(unittest.TestCase):
     # As with PlaySoundTest, incorporate the _have_soundcard() check