Wall St edges up on M&A cheer
* The Dow Jones industrial average edged up 2.19 points, or 0.02 percent, at 10,405.98. The Standard & Poor's 500 Index added 2.60 points, or 0.23 percent, to 1,118.31. The Nasdaq Composite Index rose 7.22 points, or 0.32 percent, to 2,280.79.
(Reporting by Leah Schnurr)