What's in a name? Quite a bit, if you ask the Rural Cellular Association. It's becoming the Competitive Carriers Association to reflect a membership shift from smaller providers that often serve the countryside to a much more urbane roster that includes Clearwire, Sprint and T-Mobile, on top of grown-up existing members. Not surprisingly given the advocacy group's recent bedfellows, the name switch also emphasizes the attempt to resist a consolidation of power