EMERGING MARKETS-Mexico peso tumbles, stokes bets on rate hike ahead of Fed

(Recasts with bets on Mexican interest rate hike) By Michael O'Boyle MEXICO CITY, Feb 11 (Reuters) - A global selloff of riskier assets drove the Mexican peso to a record low on Thursday, spurring bets that the central bank of Latin America's No. 2 economy could hike interest rates ahead of the United States. Colombia's peso also hit its weakest level ever amid fears of a global economic slowdown. At the same time, Brazilian stocks fell sharply, hurt by concerns the government cou