BERLIN -- A German classical music foundation says it has found the rightful heirs of a Jewish woman who was forced by the Nazis to sell two scores by composer Franz Liszt before being deported to a concentration camp.Klassik Stiftung Weimar said Wednesday that researchers were able to trace relatives of Emma Frankenbacher living in Argentina, where her daughter and son-in-law had fled Nazi persecution in the 1930s.Frankenberger, who died at 67 in the Theresienstadt concentration camp, sold the