Naspers said on Monday its full-year earnings more than doubled, buoyed by improved performance of its e-commerce businesses and contribution from China’s Tencent, which accounts for the bulk of earnings and revenues.The technology investor said its core headline earnings per share, a key indicator of operating performance, from continuing operations rose to 20.7c for the year ended March 31, from a restated 9.8c a year ago.Naspers, with global investments housed in Amsterdam-listed Prosus, said its consolidated e-commerce business has achieved profitability in the second half of the…