Add the getResultStream() default method in org.hibernate.query.Query

Now that the JPA 2.2 spec has been approved, we could add a getResultStream method in org.hibernate.query.Query which will call the stream method added in Hibernate 5.1:

This way, Hibernate 5.2 could be used even if the clients have the JPA 2.1 or 2.2 dependency on their classpath.

For more details, check out the Hibernate mailing list thread.