By Karolina Tagaris ATHENS (Reuters) - Pakistani taxi driver Muhammad Zafeer says he has to look over his shoulder when he goes to pray in Athens, where racist attackers have targeted several of the many makeshift mosques set up in cramped garages or dingy warehouses. So Greece's plan to build a state-funded mosque in the capital, more than a century in the making, comes as a relief, even if it will be housed in a disused naval base littered with weeds and rubble in a rundown neighborhood. ...