Add another test demonstrating that if requirements are declared in a...

Add another test demonstrating that if requirements are declared in a non-deterministic order, they may appear in the metadata in non-deterministic order. Ref #458.

setuptools/tests/test_egg_info.py

@@ -244,6 +244,20 @@ class TestEggInfo(object):
         pytz
         ''',
 
+        '''
+        install_requires_set_deterministic
+
+        install_requires={{"fake-factory==0.5.2", "pytz"}}
+
+        [options]
+        install_requires =
+            fake-factory==0.5.2
+            pytz
+
+        fake-factory==0.5.2
+        pytz
+        ''',
+
         '''
         install_requires_with_marker