By Edward McAllister DAKAR (Reuters) – The world’s longest-standing leader, President Teodoro Obiang of Equatorial Guinea, will run for office again in November elections, his party announced on Friday, likely extending a 43-year tenure that began when he snatched power in a 1979 coup. The rule of Obiang, 80, has been marked by torture of political opponents, sham elections, and corruption, rights groups and foreign powers say. Obiang denies such charges. Under him, the West African country has become increasingly reclusive and reliant on oil and gas, which provide about three quarters of stat…