LONDON (Reuters) - Shares in Tesco jumped as much as 5.9% in early trading Monday after Britain's biggest retailer said it was reviewing its remaining Asian businesses, in Thailand and Malaysia, including examining a possible sale.Tesco said on Sunday the review commenced following "inbound interest" in the businesses that generate about 8% of Tesco's total annual revenue and 10% of its profit.Tesco said the review was at an early stage and gave no details of the approaches received.The stock..