(Reuters) – Mutant superhero movie “X-Men: Days of Future Past” powered to $302 million in worldwide ticket sales through the U.S. Memorial Day holiday on Monday, capping a weekend in which it surpassed “Avatar” as the biggest global debut for film studio 20th Century Fox. The seventh installment in the “X-Men” franchise topped U.S. and Canadian movie charts with $111.0 million from Friday through Monday, according to estimates from tracking firm Rentrak. The film earned […]