Jacques Verduin knows most of the men in San Quentin by name. And he’s trying to make sure that when they leave the California state prison, just across the San Francisco Bay in Marin County, they don’t ever come back. Verduin — a tanned man with silver hair, in his mid-50s — has been running rehabilitation programs inside San Quentin for two decades. All it takes is a visit to one of his classes, offered…