For PaginatedCriteriaBuilder: throw exception for subqueries in order by that reference collection fields of the surrounding query

[Mobe91]

This requirement resulted from issue #38
An exception is required in this scenario because this is the only scenario in which the id query can result in multiple result set rows with the same root entity id. This is because we have to include the subquery in the select clause if it is used in the order by. Furthermore, if the subquery references a collection from the surrounding query it will cause the final result set to contain multiple rows for the same root entity.

[beikov]

This is only valid for subqueries that are used in the order by clause.