TOKYO, Apr 26 : Japanese Prime Minister Shinzo Abe's itinerary for his weeklong US visit beginning Sunday will showcase the success of the alliance built from Tokyo's defeat in World War II, while promoting a political agenda based on still stronger military and economic ties. The visit will take Abe from Boston to the Silicon Valley, with ample time for hobnobbing with high-flying businesspeople like the founders of Facebook and Apple, Japanese scholars and celebrities.    ?AP