the logic around it from the CASTOR schemata) for the stager db.
This involved the usage of SubRequest.reqType where needed, and a
major change of subRequestToDo and subRequestFailedToDo, which now
return the corresponding Request and Client data in one go for the
stager processing.
Furthermore, fillObj() calls where the remote entity is an abstract
class (like OBJ_Request) have been dropped, and (one) createObj()
call without type has been amended.