-/* 1. Renamed type Z3950_search to Z3950_query and the functions
- that manipulate it..
- Changed positions/sizes to be of type size_t rather than int.
- 2. Deleted Z3950_resultset_get. Added Z3950_record_dup. Record
- reference(s) returned by Z350_resultset_records and
- Z3950_resultset_record are "owned" by result set.
-*/