Allow for three requests (fixes test on Python 3.3).

--HG--
branch : distribute
extra : rebase_source : 42f8c571b3296488b167aaa863bdbfa771f6a9d9

setuptools/tests/test_easy_install.py

@@ -307,7 +307,9 @@ class TestSetupRequires(unittest.TestCase):
         # create an sdist that has a build-time dependency.
         self.create_sdist(install)
 
-        self.assertEqual(len(p_index.requests), 2)
+        # there should have been two or three requests to the server
+        #  (three happens on Python 3.3a)
+        self.assert_(2 <= len(p_index.requests) <= 3)
         self.assertEqual(p_index.requests[0].path, '/does-not-exist/')
 
     def create_sdist(self, installer):