DUBAI, United Arab Emirates (AP) — Sheikh Hamad bin Khalifa Al Thani, who as ruler of Qatar transformed the tiny Persian Gulf nation into a global player in diplomacy, media and investment, and then shattered tradition by voluntarily turning over power to his son, has died, state media reported. He was 74.The state-run Qatar News Agency reported his death. It offered no cause.Sheikh Hamad, who stepped down in June 2013 after 18 years as emir, was the architect of energy-rich Qatar’s stunning ambitions that turned it from a backwater into an international crossroads in less than a generation. Qatar owns the Harrod’s department store in London and founded the powerful Al Jazeera satellite news network.Qatar’s political reach today stretches from North Africa to Afghanistan and it hosted the