[soc2010/test-refactor] small fix to allow unittest2 to compare ValuesQuerySet using assertItemsEqual

git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2010/test-refactor@13413 bcc190cf-cafb-0310-a4f2-bffc1f526a37

Author: PaulMcMillan

django/utils/unittest/case.py

@@ -898,7 +898,7 @@ def assertItemsEqual(self, expected_seq, actual_seq, msg=None):
             expected.sort()
             actual = actual_seq[:]
             actual.sort()
-        except TypeError:
+        except (TypeError, AttributeError):
             # Unsortable items (example: set(), complex(), ...)
             expected = list(expected_seq)
             actual = list(actual_seq)