MEXICO CITY (Reuters) – The 76-year-old Mexican drug lord Miguel Angel Felix Gallardo has been granted house arrest after three decades in jail by a district judge, prosecutors said on Monday. A legendary figure in the drug world and co-founder of the Guadelajara cartel, Felix Gallardo was a pioneer in trafficking large shipments of cocaine to the United States in alliance with the deceased Colombian drug lord Pablo Escobar. The former police officer was jailed in 1989 for the murder of a U.S. Drug Enforcement Administration (DEA) agent. Felix Gallardo, who has recently spent time in hospital …