“ The Violinist ” beat out major competition at Annecy, such as “In Waves,” “Viva Carmen” and “ Iron Boy ,” all already big hits at Cannes, to win on Saturday the biggest festival prize in animation: Annecy’s feature film Cristal. A tale of two young violinist virtuosos in and after WWII Singapore, “The Violinist” certainly had its fans at Annecy, but most pundits thought the top feature prize would go to either “Iron Boy” or “Tangles,” both also being talked up as Awards season contenders.