OSLO (Reuters) - Norwegian schools are meant to be magically free of bullying when students go back to class on Wednesday after the summer break. But pupils say the landmark "zero tolerance" campaign for name-calling, hitting, hair-pulling, arm-twisting and other playground nastiness is about as realistic as the plot of a "Harry Potter" novel. Even Prime Minister Kjell Magne Bondevik admits the two-year scheme launched in 2002 is optimistic in its goal of eradicating bullying from the start of the school year Wednesday. "There will be cases of bullying but zero tolerance is our target," he told Reuters of a...