Sponsored by Freedom Trails: Legacy of Hope, African American Heritage Tourism Development, Illinois If you're into jazz, you're surely into Miles Davis. The money-makers know this too, which is why you see countless Miles tributes and marketing tie-ins. But all cynicism aside, last Friday's 80th Birthday Party in East St. Louis was the real deal. A simple idea to celebrate a local son grew into a full-blown, week-long jazz-fest celebration of the region's living legacy. Plans a