HANOVER, Germany (AFP) - California Governor Arnold Schwarzenegger, guest of honour at the world's biggest high-tech fair, told crisis-hit executives Monday to stop their whining and invest in the future. In a rollicking speech on the eve of the CeBIT fair, Schwarzenegger drew on references from his career as a body-builder, actor and entrepreneur to pump up his recession-knocked audience, which included German Chancellor Angela Merkel. "We are gathering in challenging times. Some may say this is the wrong time for a big trade show like this but they are wrong," the Austrian-born Schwarzenegger said. "Losers whine but winners move...