NEW YORK — Meshulam Perlman says he will never be able to forget the horror he witnessed after a deadly suicide bombing of a bus in a busy district of Jerusalem in 2004. “Bodies, corpses were flying. They were flying onto balconies and rooftops,” said the 70-year-old flower shop owner. “People were severed in two, severed into pieces. ... It was a worse scene than a scene of war.” Perlman’s account gave jurors a taste of what’s to come at a trial stemming from a lawsuit …