(Reuters) - London's FTSE 100 was lifted by a near 5% jump in Primark owner A.B. Foods following its strong forecast on Tuesday, while miners gained on brighter hopes of a U.S.-China trade deal.The FTSE 100 rose 0.1% by 0810 GMT, holding at a one-month high it touched in the previous session, while the midcap index dipped 0.1% due to a sell-off in industrial stocks after Weir Group's underwhelming outlook.Associated British Foods was on track for its best day in more than 10 months after it..