Movie Pioneer's Reward - Adolph Zukor, 80 years old yesterday and still an active leader in the film industry, gets birthday hugs from Dorothy Lamour (left) and Lizabeth Scott as he "starred" at a film industry dinner last night celebrating his birthday and his forthcoming 50th anniversary as a film producer. More than a thousand film town notables attended, including many whose movie careers he launched. Zukor, board chairman of Paramount Pictures, says he has no plans to retire. Party Hug: Doro