MEXICO CITY (Reuters) – Hurricane Roslyn intensified to a powerful Category 3 storm on Saturday as it churned towards tourist zones along Mexico’s Pacific coast and is expected to make landfall by Sunday, the U.S. National Hurricane Center (NHC) said. Roslyn was forecast to pick up strength as it moves parallel to the southwestern coast of Mexico through midday Saturday before making landfall along the coast of Nayarit state Sunday morning, bringing damaging winds and a major storm surge, the NHC said. Nayarit is home to popular beach destinations like Sayulita and Punta Mita. Although some we…