SAN FRANCISCO--(BUSINESS WIRE)--Gap Inc. (NYSE: GPS) today reported that November 2014 net sales increased 6 percent compared with last year. Net sales for the four-week period ended November 29, 2014 were $1.72 billion compared with net sales of $1.63 billion for the four-week period ended November 30, 2013. “Old Navy delivered standout performance in November, with customers responding positively to the brand’s holiday assortment and marketing,” said Glenn Murphy, chairman and chief executive