FOREX-Swiss franc jumps; govt will 'live with' strength

* Swiss franc climbs, government accepts strength* Dollar slides against yen, BofJ intervention eyed* Markets eye upcoming U.S. payrolls data (Updates prices, adds details)NEW YORK, Aug 31 (Reuters) - The Swiss franc jumped against the euro and the dollar on Wednesday after a top Swiss government official said the nation would have to live with a strong currency and the Swiss National Bank (SNB)