Jane Fonda was the main attraction on the opening night of the TCM Classic Film Festival , not counting the ostensible honoree of the evening, the late Robert Redford , who costarred with her in the film that was about to be shown, 1967’s “Barefoot in the Park,” along with three other pictures. Fonda testified to her frequent costar’s unflagging integrity, but also did not avoid the elephant in the room that was Redford’s physical appearance — admitting that she had a crush, apparently unrequited, over the more than 50-year span they worked together. “He was meant to be in movies,” Fonda told interviewer Ben Mankiewicz Thursday night at the TCL Chinese gala. “He was a brilliant movie star. He also was the most gorgeous human being I had ever been with. He was very smart and he was really funny. He loved practical jokes, and he was reckless.…