CANADA STOCKS-TSX edges up as energy shares climb

* TSX up 17.22 points, or 0.12 percent, at 14,979.59 * Five of the 10 main index sectors advance * Valeant dips after calling special meeting By John Tilak TORONTO, June 25 (Reuters) - Canada's main stock index rose slightly on Wednesday as gains in oil and gas shares helped offset the impact of data that showed a bigger than expected drop in U.S. economic growth in the first quarter. As well as shrugging off the U.S. figures, which showed the U.S. economy recorded its wors