ATHENS A trial linked to the illegal wiretapping of politicians and journalists using the spy software Predator opened Wednesday in Greece , three years after a scandal that rocked the country. Four people, two Israelis and two Greeks, are being tried at the Athens Criminal Court for the "violation of telephone communication secrecy" and face a maximum five-year prison sentence. Their trial, initially scheduled for March, was postponed by six months. Three of the defendants are former