BUZZ-Vedanta group shares fall after S&P puts parent on creditwatch negative
** Vedanta and Cairn India (BSE: CAIRN4.BO - news) fall after S&P puts parent Vedanta Resources (Other OTC: VDNRF - news) on "credit watch negative"
** S&P cited in part uncertainty behind the proposed merger between Vedanta and Cairn India
** Vedanta made a $2.3 bln offer in June to buy out minority shareholders in cash-rich Cairn India
** Vedanta shares down 3.6 pct, Cairn India down 2.5 pct
** The ratings agency has Vedanta Resources rated as 'BB-minus' (RM (LSE: RM.L - news) : manoj.rawal.thomsonreuters.com@reuters.net)