BUZZ-Aveva: Goldman Sachs upgrades
** British engineering software company up 1.7%
** Goldman Sachs (NYSE: GS-PB - news) raises to "neutral" from "sell" on merger with Schneider bringing the strategic appeal of PLM software to the forefront
** Aveva agreed 3 bln pound merger with Schneider earlier this month
** Goldman Sachs sees increased scale in North America for co after Schneider deal
** Says Schneider deal will be accretive even though demand is lacklustre in primary oil and gas market
** GS raises PT to 2400p from 1770p, removes stock from pan-Europe sell list (RM (LSE: RM.L - news) :devbrat.saha.thomsonreuters.com@reuters.net)