Barbra Streisand argued that sexism cost her Oscar nominations for “Yentl” and “The Prince of Tides” during a spirited public interview at the Tribeca Film Festival on Saturday. But it wasn’t just men who balked at the idea of a woman calling the shots on a major motion picture. “There were a lot of older people,” Streisand told her interlocutor Robert Rodriguez. “They don’t want to see a woman director.” “I don’t know how many women wanted to see a woman director,” she added.