‘MANK’ IS A GRAND CONTRIBUTION TO HOLLYWOOD HISTORY

In one history of the movies, “Citizen Kane” screenwriter Herman Mankiewicz might look like a footnote. The former playwright had a hand in many famous pictures, including “The Wizard of Oz,” but most went uncredited. He was the smartest guy in the room, a drunk and a gambler who was dead at 55. And his kid brother, Joe, who directed and wrote “All About Eve,” would go on to be the better-known Mankiewicz.

But in another version of Hollywood history, the one David