By Vernell Hackett NASHVILLE, Tennessee (Reuters) - Ten years after embarking on a lengthy "Farewell Tour," country music band Alabama was back on the road on Friday to mark 40 years in the business. While the 2003 tour packed arenas across the United States, the crossover southern rock and country band will play in smaller venues this time, as well as taking to the seas for the first time on a four-day Caribbean cruise. ...