New test framework for castor persistence

Our current test framework lacks some important features:

• tests are not true junit test
• it still tests JDO instead of JDOManager
• it does not support multiple configurations
• related to the number of supported databases the test configuration file is very long
• a new test needs to be added for every supported database separately

I'd therefore suggest a new configuration file of which I will attach DTD, XSD and example configuration soon.