We've written a little bit about Eugene Caldwell, the 78-year-old 49ers fan killed by a runaway police horse last year at Candlestick Park. According to court records, Caldwell's widow and grown children filed suit against a bevy of defendants on April 17; yesterday the Examiner ran a story in which they revealed they're angling for a payout in the millions.The notion of a spooked horse running wild through the streets of San Francisco would have seemed antiquated even the better part of a ce