By Anna Ringstrom and Marie Mannes STOCKHOLM (Reuters) -Swedish Match shares leapt to a record high on Tuesday after Marlboro-maker Philip Morris International Inc said it was in talks to buy the Stockholm-based company in a bet on the fast-growing market for cigarette alternatives. A deal could be announced imminently valuing Swedish Match at close to $16 billion including debt, a source familiar with the matter told Reuters. Swedish Match makes most of its profit from Swedish-style snuff called “snus”, but sales of its Zyn tobacco-free nicotine pouches are growing rapidly in Scandinavia and …