DUBAI, UNITED ARAB EMIRATES -- To coin a phrase uttered by the actor John Houseman from the Smith Barney television commercials of the mid-1980s, Senor Buscador (Mineshaft) has really 'earrrrrned it' as he approaches his second straight appearance in an eight-figure horse race, Saturday's $12-million G1 Dubai World Cup at Meydan Racecourse. "Yeah. I mean, it's been pretty crazy," admits owner and breeder Joey Peacock, Jr. Peacock, a resident of San Antonio, and his family have been in the horse business for the better part of 5 1/2 decades, but...