Nick Vivarelli International CorrespondentCatalan director Clara Roquet’s teenage female friendship drama “Libertad” and Ferit Karahan’s social drama “Brother’s Keeper,” about Kurdish kids living in fear at a Turkish boarding school, won the best film awards respectively in the international and national competitions at Turkey’s 58th Antalya Golden Orange Film Festival which wrapped Saturday.“Libertad,” a first feature that centers on a bond that forms during a summer in Spain’s Costa Brava