[1.0.X] Fixed the test from [10447] to not depend on `os.listdir()` ordering....

[1.0.X] Fixed the test from [10447] to not depend on `os.listdir()` ordering. I always forget about that one; thanks, buildbot. Backport of r10449 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10450 bcc190cf-cafb-0310-a4f2-bffc1f526a37