FTSE 100 heads for best weekly performance in nine months

(Reuters) - London's exporter-heavy FTSE 100 jumped along with its European counterparts on strong French manufacturing data, while a sharp rise for AstraZeneca after a 2019 forecast upgrade and a slide in sterling amid Brexit woes also lent support.The blue-chip index climbed 0.9% to a near one-month high, taking home gains for the fourth consecutive session and outshining the European benchmark. A sell-off in the pound ahead of the European Union's decision on whether to grant Britain another..