A couple top executives at Apple were shown the door yesterday, in a major shakeup by CEO Tim Cook. Scott Forstall, a longtime protege of Steve Jobs who accompanied Jobs when he moved to Apple from Next back in 1996, was relieved of his duties as head of the mobile software products group, which is responsible for iOS and Apple apps development. He will be retained into next year as a special advisor to Cook. In addition, John Browett, who Apple hired to head up their retail stores seven months ago, was let go.