MIAMI (AP) — Harvey regained tropical storm strength as it drifted in the Gulf of Mexico toward Texas early Thursday and forecasters said it could become a hurricane. A hurricane warning was issued for the Texas coast Thursday morning, covering an area from Port Mansfield to Matagorda. The storm’s maximum sustained winds had increased to near 45 mph (70 kph). The U.S. National Hurricane Center said additional strengthening was expected and Harvey could become a…