John Thornton has finally addressed the recurring outcry over his compensation – by taking a nearly $10-million (U.S.) cut in pay. The executive chairman of Barrick Gold Corp. will receive $3.1-million for his work in 2015, a dramatic reduction from the $12.9-million he pocketed for 2014. Shareholders have twice voted against Mr. Thornton’s compensation package in recent years through non- …