Japan's Nikkei slips on Cyprus bailout worries

* Nikkei eases 0.5 pct, Topix down 0.3 pct * Softbank rises after announcing tender offer on Gungho By Dominic Lau TOKYO, March 26 (Reuters) - Japan's Nikkei average slipped on Tuesday after a senior euro zone official said the Cyprus rescue could be a new template to deal with other banking problems in the region. Gains in index heavyweight Softbank Corp, after its mobile unit said it will launch a tender offer to make game developer Gungho Online Entertainment Inc a consolidat