Make ha-jdbc work with JBoss 7 and Java 6.
The change to CommonDataSourceDatabase.java is needed to get around problem with JBoss 7's jaxb implementation.
The change in AbstractDatabase.java and DriverDatabase.java are needed in order to get ha-jdbc to work with non-XA data sources.
The rest of the changes where needed to get ha-jdbc to work under Java 6 which lacks java.sql.Driver#getParentLogger().
Merge branch 'master' of https://github.com/tadglines/ha-jdbc