By CARLOS BARRAGÁN and LYNSEY CHUTEL Hundreds of firefighters and emergency workers were battling a wildfire Saturday in southern Spain that has killed at least 12 people, officials said. The fire is already one of the deadliest on record in Spain, and 23 people were still missing as of Saturday afternoon. Most of those confirmed to have been killed were foreigners. More than 1,400 people were forced to flee their homes, said Antonio Sanz Cabello, the health minister in the region of…