Disable the test for importing very long lists for MacPython: it triggers

an out-of-memory condition (and a hang on OSX). Filed a bug report
(#571845) to make sure this is eventually fixed.

Lib/test/test_import.py

@@ -107,4 +107,5 @@ def test_module_with_large_stack(module):
         if os.path.exists(fname):
             os.unlink(fname)
 
-test_module_with_large_stack('longlist')
+if sys.platform != 'mac':
+    test_module_with_large_stack('longlist')