Former South African president and anti-apartheid hero Nelson Mandela was in a “serious but stable” condition on Saturday after being taken to hospital with a recurrence of a lung infection, the government said. The 94-year-old, who became the first black leader of Africa’s biggest economy in 1994 after historic all-race elections, has been in hospital three times since December. He has been battling the infection for several days, a statement said. …