Sure it’s for a life-saving loan, but the New York Times [NYT] Co.’s decision to do business with controversial Mexican billionaire Carlos Slim Helu is seen by some as a deal with the devil. “He has a mixed reputation on his best day,” Douglas A. McIntyre, editor of 24/7 Wall St., a financial commentary service, said about Slim, one of the world’s richest men. Borrowing money from a man that the Times called a robber baron and a thief in 2007 shows that finding someone to invest in the newspaper “must have been very, very hard,” McIntyre said. Late Monday,...