Nikkei rebounds 2.4 pct as Fed stimulus concerns ease, exporters lead

* Exporters, real estate stocks rebound after recent selloff * Market still uneasy, but analysts bullish on long-term prospects * Bernanke's speech and U.S. jobs data in focus next week - analysts By Ayai Tomisawa TOKYO, May 31 (Reuters) - Japan's Nikkei share average bounced sharply on Friday, recouping some of its recent steep losses, as investors bought back beaten-down stocks after soft U.S. economic data eased concerns that the Federal Reserve would soon start unwinding its