WARSAW/KRAKOW (Reuters) – Swiss financial titans UBS and Credit Suisse are expanding their operations in provincial Poland in a cost-saving drive made more urgent by the surge in the value of the Swiss franc. Economic imperatives are forcing the banks to transfer some of their functions to cheaper locations and swap lakeside Zurich, with its streets lined with luxury boutiques, for the rougher-edged charm of Krakow and Wroclaw. Poland’s zloty has fallen 11.6 percent against the Swiss franc since Jan. 15.