Add support for Python 3 in DB API test suite stub.

test/test_dbapi20.py

@@ -10,6 +10,8 @@
 """Driver specific portion of the DB API test suite provided by Stuart Bishop
    available at http://stuartbishop.net/Software/DBAPI20TestSuite/"""
 
+from __future__ import print_function
+
 import cx_Oracle
 import dbapi20
 import unittest
@@ -43,6 +45,6 @@ class TestSuite(dbapi20.DatabaseAPI20Test):
 
 
 if __name__ == "__main__":
-    print "Testing cx_Oracle version", cx_Oracle.version
+    print("Testing cx_Oracle version", cx_Oracle.version)
     unittest.main()