INDIANAPOLIS — Will Power can win anything now, even the Indianapolis 500, an intimidating race on an oval he hated because it marginalized his talent. He drives for Roger Penske and nothing matters more to the boss than winning at Indianapolis Motor Speedway. So Power worked to change his attitude, improve his performance on ovals and respect the track. It got Power into the most storied winner’s circle in history Sunday when he won the Indy 500 to give Penske a 17th victory in “The Great American Race.” Power actually swept the month of May at Indy after winning on the road course two weeks ago and the 37-year-old Australian now has 34 wins in IndyCar, tying him with Al Unser Jr.