Rename the unittest test_suite function to not clash with a test module name…

Rename the unittest test_suite function to not clash with a test module name (unittest.test.test_suite is now unambiguous).

Lib/test/test_unittest.py

@@ -4,7 +4,7 @@ from test import test_support
 
 
 def test_main():
-    test_support.run_unittest(unittest.test.test_suite())
+    test_support.run_unittest(unittest.test.suite())
     test_support.reap_children()
 
 

Lib/unittest/test/__init__.py

@@ -6,7 +6,7 @@ import unittest
 here = os.path.dirname(__file__)
 loader = unittest.defaultTestLoader
 
-def test_suite():
+def suite():
     suite = unittest.TestSuite()
     for fn in os.listdir(here):
         if fn.startswith("test") and fn.endswith(".py"):
@@ -18,4 +18,4 @@ def test_suite():
 
 
 if __name__ == "__main__":
-    unittest.main(defaultTest="test_suite")
+    unittest.main(defaultTest="suite")