DUBLIN (Reuters) - A wild mountain goat was crowned King of Ireland on Wednesday in an ancient annual ritual whose origins are lost in the mists of history. For three days, Charlie, a grey male goat with brown trimmings, will reign over this year's Puck Fair -- one of Ireland's oldest and best-loved street festivals -- in Killorglin, in the southwestern county of Kerry. "Nobody really knows how it came about or when," said Jean Kearney, a spokeswoman for the festival, which is expected this year to attract more than 100,000 visitors for a marathon of music, drinking and dancing....