(Reuters) – Russian missiles and shells hit Ukrainian positions in several regions and there was no let up in heavy fighting in Donetsk in the east, the Ukrainian military said on Thursday night as Moscow’s occupying forces appeared more active. FIGHTING * Russia pounded gas production facilities and a major missile factory in new missile strikes on critical infrastructure in Ukraine, Ukrainian officials said. * Investigators in Ukraine’s recently liberated southern region of Kherson have uncovered 63 bodies with signs of torture after Russian forces left, Ukraine’s interior minister was quote…