Europe shares slump 8 pct; banks, energy stocks fall Fri Oct 24, 2008 7:35am EDT * FTSEurofirst 300 slumps 8 pct * Fears credit crisis more widespread * Banks, energy stocks lead losers By Joanne Frearson LONDON, Oct 24 (Reuters) - European shares fell 8 percent as investors fear the credit crunch is starting to spill over into the emerging markets and company earnings deteriorate. By 1106 GMT, the FTSEurofirst 300 index of top European shares was down 8 percent at 802.9 points, having fallen to a day's low of 787.29 and hitting its lowest level since April 2003. "Equities...