George S. Feiwell’s client list was a “who’s who” of divorcees.There was legendary Teamsters leader Jimmy Hoffa. Comedian Lenny Bruce. Nobel Prize-winning writer Saul Bellow. Chicago Blackhawks owner Rocky Wirtz. All of them characters who enlisted Feiwell to help dissolve their marriages.But Feiwell, a lawyer in Chicago for more than six decades, was also a character himself.When he flunked out of …