It seems that a onetime company suitor -- and current shareholder -- is contemplating a buyout offer.It seems Blackbaud (BLKB 4.24%) might be in play.A media report stated that the cloud-based software provider might be the target of a renewed buyout effort by a former suitor. On that potentially share-price-lifting news, investors piled into the stock on Thursday to the point where it closed more than 5% higher. That was more than good enough to beat the 0.7% increase of the S&P 500 index on the day.A new ...