Support for partially complete openejb-jar.xml files

Currently the auto deployer only kicks in if you have no openejb-jar.xml file at all. If you do have an openejb-jar.xml it assumes it is correct and does nothing.

The code to modify an existing openejb-jar.xml is present in the AutoConfigAndDepoy class, we simply need to merge some logic over or improve that class so it can be used instead of the AutoDeploy class.