N2:BNKRET N2:BNKS N2:CMPNY N2:COCRED N2:COFS N2:DEAL1 N2:DLTK N2:MRG N2:NAMER N2:PUBL N2:US Capital One to buy Discover Financial in $35.3 billion all-stock dealBy Anirban Sen and Michelle Price NEW YORK/WASHINGTON (Reuters) -Warren Buffett-backed U.S. consumer bank Capital...