Add method makeSelectQueryOverRepositoryAsResult returns TupleQueryResult to RDFDataRepository interface.
Add implementation of method makeSelectQueryOverRepositoryAsResult to LocalRDFRepo class.
Add method makeSelectQueryAs result returns TupleQueryResult to RDFDataUnit class.
Add method makeConstructQueryOverRepository returns GraphQueryResult to RDFDataRepository interface.
Add implementation of method makeConstructQueryOverRepository.
Add method makeConstructQuery returns GraphQueryResult to RDFDataUnit class- fix #208 issue.