Wall St rallies as oil holds on to gains

Wall Street rallied on Friday as steadying oil drove energy shares, putting the major stock indexes on track for their fourth straight weekly gains in more than four months. U.S. crude pared some of their gains, but were up more than 1 percent after the International Energy Agency said oil prices might have bottomed as output in the United States and other non-OPEC countries was beginning to fall quickly. Investors also took a positive view of European Central Bank's new stimulus package unveile