MADRID (Reuters) – Privately-owned supermarket chain Mercadona on Friday approved wage increases for its entire workforce in Spain and Portugal, saying they would be in line with the official rate of inflation recorded in December. “The aim is to maintain the purchasing power of all people who form part of Mercadona, because they are the customers’ best asset,” the retailer – Spain’s largest by revenue and market share – said in a statement. The measure will enter into force starting from the January payslips of the more than 96,000 employees in Spain and Portugal, matching December’s Consumer…