DUBLIN – Shareholders in Allergan plc voted with alacrity to approve Abbvie Inc.'s $63 billion takeover of the Botox maker at an extraordinary general meeting in Dublin Monday. Investors voted 99.64% in favor, with just .36% voting against. Although the outcome was never in any doubt, an unexpected, last-minute €572 million (US$631 million) charge on the transaction, courtesy of the Irish government, is likely to have swayed all but the most hardened holdouts to cast their votes in favor of the deal, lest Abbvie were to get cold feet.