Update for unittest from Python 2.1 standard library

src/BTrees/tests/testConflict.py

@@ -95,9 +95,7 @@ from BTrees.OOBTree import OOBTree, OOBucket, OOSet, OOTreeSet
 from BTrees.IOBTree import IOBTree, IOBucket, IOSet, IOTreeSet
 from BTrees.IIBTree import IIBTree, IIBucket, IISet, IITreeSet
 from BTrees.OIBTree import OIBTree, OIBucket, OISet, OITreeSet
-from unittest import TestCase, TestSuite, VerboseTextTestRunner, makeSuite
-
-TextTestRunner = VerboseTextTestRunner
+from unittest import TestCase, TestSuite, TextTestRunner, makeSuite
 
 class Base:
     """ Tests common to all types: sets, buckets, and BTrees """
@@ -507,7 +505,7 @@ def test_suite():
 
 def main():
     alltests=test_suite()
-    runner = TextTestRunner()
+    runner = TextTestRunner(verbosity=2)
     runner.run(alltests)
 
 def debug():