MIDEAST STOCKS-Saudi pulls back as Doha deal in doubt; Egypt gains

* Saudi stock market pulls back from three-month high * But most valuable Saudi bank beats earnings forecasts * Dubai down as investors sell mid- to large-caps * Abu Dhabi's Dana Gas jumps * Egypt gains as local investors return to market By Celine Aswad DUBAI, April 17 (Reuters) - Uncertainty at talks among oil producers in Doha dampened Gulf stock markets on Sunday, with Saudi Arabia pulling back after a 4 percent jump last week. Egypt edged up as local investors returned to buy shares. ...