BUZZ-Rolls-Royce: streamlining business
** British aero-engine maker Rolls-Royce +7.5 pct, at top of FTSE 100 & set for biggest one-day rise since August
** Co says mulling the sale of its commercial marine operation
** Co says will streamline civil aerospace, defence aerospace, power systems, marine and nuclear segments into civil aerospace, defence and power systems units
** Co remains comfortable with market expectations for the final results due March 7