BT warning, poor earnings weigh on European shares; Generali rallies

By Kit Rees LONDON (Reuters) - Europe's earnings season got off to a rocky start on Tuesday with profit warnings from BT Group and Aryzta sending their shares sharply lower. The pan-European STOXX 600 index still managed to eke out a 0.2 percent gain, though, propped up by Italian financials and mining stocks. While basic resources was the biggest sectoral riser, boosted by a weaker dollar, Italian insurer Generali was the biggest individual gainer, jumping 8.2 percent on talk Intesa Sanpaolo co