University of Massachusetts President William M. Bulger asked FBI agent John J. Connolly Jr. more than 20 years ago to keep his gangster brother James J. ``Whitey'' Bulger ``out of trouble,'' a Winter Hill Gang hit man told a federal jury yesterday during shocking testimony also linking the retired agent to two mob murders. John Martorano, a remorseless killer of 20 men, claimed Whitey Bulger told him the Bulgers had a friend at the FBI after William helped Connolly escape poverty and the siren song of crime in their South Boston neighborhood. ``He said he was told that Connolly owed...