CANADA STOCKS-U.S. data, gold miners lift TSX to near six-year high

* TSX rises 78.56 points, or 0.55 percent, to 14,459.11 * Eight of 10 main index sectors advance * Osisko soars on Yamana deal * Agrium slips after profit warning By John Tilak TORONTO, April 2 (Reuters) - Canada's main stock index rose to a nearly six-year high on Wednesday, buoyed by U.S. economic data and a rally in shares of gold miners after the price of bullion advanced. Private-sector data showed U.S. companies picked up the pace of hiring in March, suggesting the