Separating the test code for the JPA projects in a separate directory so

[utils] / test / README.txt

Behavior which requires a persistence provider but does not use the persistence provider
extensively is only tested with hibernate. 

Test code for each of the JPA providers is in a separate 'jpatest-' project. This is 
required to remove the dependence on the JPA provider from the pom, allowing them to 
be deployed to the central maven repo.