CANADA STOCKS-TSX little changed as Cameco jumps, RBC slips

* TSX down 0.40 of a point at 14,188.58 * Five of 10 main index sectors decline * Cameco, Paladin Energy jump after Japanese policy shift * RBC drops after quarterly report By John Tilak TORONTO, Feb 26 (Reuters) - Canada's main stock index ended little changed on Wednesday, with gains in Cameco Corp following a favorable shift in Japanese nuclear policy offset by weakness in Royal Bank of Canada after the lender reported quarterly results. Investors also digested data