Make all idle test case names end with 'Test'.

Lib/idlelib/idle_test/test_calltips.py

 import unittest
 import idlelib.CallTips as ct
 
-class Test_get_entity(unittest.TestCase):
+class Get_entityTest(unittest.TestCase):
     def test_bad_entity(self):
         self.assertIsNone(ct.get_entity('1/0'))
     def test_good_entity(self):

Lib/idlelib/idle_test/test_config_name.py

@@ -22,7 +22,7 @@ class Dummy_name_dialog:
 orig_mbox = name_dialog_module.tkMessageBox
 showerror = Mbox.showerror
 
-class TestConfigName(unittest.TestCase):
+class ConfigNameTest(unittest.TestCase):
     dialog = Dummy_name_dialog()
 
     @classmethod