Jean Seberg was a gamine, blonde actress who landed the title role in Otto Preminger's "Saint Joan" (1957) after a much-publicized contest involving some 18,000 hopefuls. She was best-known, however, for her contribution to New Wave cinema. The fresh-faced Iowan started acting in high school, but was a completely unknown 17-year-old when Preminger whisked her off to England. "Saint Joan" and its star were critically slammed, but Preminger went on to star her again in the soap opera "Bonjour Tristesse" (1958), which was scandalous and "modern" enough to buoy Seberg's career.After the silly but