* Redefine db_field_log to be a union between a "value" type (as before) and a "reference" type (pointers to values, dtor for plugin array copies). * Add db_delete_field_log function that correctly destructs a db_field_log.
* Redefine db_field_log to be a union between a "value" type (as before) and a "reference" type (pointers to values, dtor for plugin array copies). * Add db_delete_field_log function that correctly destructs a db_field_log.