If there was ever something to spark warmth and joy in the dead of winter, this album is it – but then, “Day Is Come” would be just as welcome in the middle of a July inferno. This is the second CD (the phrase “long-awaited” goes without saying) by the trio of Nuala Kennedy, John Doyle, and Eamon O’Leary, all of whom have justly exalted stations in the Irish music realm