HONG KONG (REUTERS).- Some $5.6 million worth of fine wines from the cellars of British composer Andrew Lloyd Webber were hammered off in a sale at Sotheby’s Hong Kong on Saturday amid ebullient demand from Asian and online bidders. With the former British colony of Hong Kong emerging as a global wine auction hub overtaking stalwarts like New York and London, the Lloyd Webber sale — 100 percent sold by lot — again underscored a voracious and growing thirst for the world’s finest vintages amongst minted Asian and Chinese buyers. In another telling sign, a two-day auction in Hong Kong by leading U.S. wine sellers Acker Merrall & Condit fetched a bumper $10.8 million for 1,200 lots of wines, with rare Chateau Petrus and Lafite vintages shining through. At the Lloyd Webber sale in the luxury Mandarin Oriental Hotel, a mix of Western and Asian collectors, some sipping wine, from Webber’s personal collection and feasting on a gou