CANADA STOCKS-TSX at record high after Tim Hortons extends rally

* TSX up 41.06 points, or 0.26 percent, at 15,639.80 * Eight of 10 main index sectors advance * Scotiabank slips, BMO gains after lenders report results * Tim Hortons surges nearly 9 percent By John Tilak TORONTO, Aug 26 (Reuters) - Canada's main stock index hit a record high on Tuesday as shares of Tim Hortons Inc extended their rally after the coffee chain said it planned to merge with Burger King Worldwide Inc in a C$12.64 billion ($11.53 billion) deal. The companies