The first question that might occur to you when you hear the propulsive blast of power chords, drum beats and sneering vocals that opens the title track of the new Bon Jovi album is,"This song is called'Have a Nice Day'?"It sounds awfully raw for such a smiley-face title. That discordant effect, of course, is intentional."That title was the first, and ultimately, the last one I'd come to,"Jon Bon Jovi says."There's obviously a sense of irony when you say it."