(Adds word "brand" in lead and third paragraph; also sends toadditional Reuters codes) * Kraft has spun off snacking business from grocery * Danone keeps Vitasnella brand for milk derivatives * Mondelez makes over a third of sales in Europe By Antonella Ciancio and Dominique Vidalon MILAN/PARIS, Oct 5 (Reuters) - Kraft Foods Europe, which isbeing integrated in spun-off snack giant Mondelez International, is buying Italy's Vitasnella snack brand f r om Frenchfoods maker Danone for an undisclosed sum as part ofits consolidation plans in Europe.