Stocks Up Despite Sluggish GDP Reading NEW YORK - A sluggish gross domestic product reading was nonetheless better than expected, prompting investors to send stocks slightly higher Friday on hopes that the economic slowdown would not be as bad as first thought.    The 2.8 percent GDP growth in the second quarter, a revision from the 3 percent preliminary figure reported in July, is a far cry from the 4.5 percent growth in the first quarter...