CANNES (Reuters) - An intimate lesbian love story by French director Abdellatif Kechiche won the top prize in Cannes on Sunday, and the film festival's director immediately urged the large crowds protesting against gay marriage in Paris to go and see it. "La Vie d'Adele - Chapitre 1 & 2" (Blue is the Warmest Colour) was chosen from a field of 20 films exploring sex, violence and emotional anguish which were vying for the Palme d'Or, one of the most coveted film awards after the Oscars. Critics picked the three-hour film as a possible winner at the 66th Cannes...