United Airlines today extended the contract of its CEO, Glenn Tilton, until 2011, ending speculation about his departure (his previous contract expired next year).Tilton joined United in September of 2002 and headed the airline during its long Chapter 11 bankruptcy process. But now that United's out of bankruptcy, Tilton is calling for 'more consolidation' in the industry - meaning mergers of some sort. "Deregulation has done its work," he told the Financial Times earlier this year. "It's time to recognise that we should compete on a grander scale....