GLOBAL MARKETS-Shares rebound after steep decline, euro falls on low ECB repayments

* Low ECB loan repayment pushes euro to 6-week low * U.S., Europe shares, commodities rebound after sharp losses * Italian elections at weekend in focus By Angela Moon NEW YORK, Feb 22 (Reuters) - Major stock markets rose on Friday, recovering some of the previous session's sharp losses, but the euro hit a six-week low on news that banks repaid less than expected of their crisis loans from the European Central Bank. Oil prices rose as evidence of improving business morale i