ATLANTA — The Atlanta Hawks cleaned out their lockers, met with the coaches, and headed off for summer vacation Thursday. Even though a historic 60-win season ended with a one-sided sweep by the Cleveland Cavaliers in the Eastern Conference final, no one was hanging their heads less than 48 hours after the final game. Coach Mike Budenholzer and his players all view this season as a turning point for the long-overlooked franchise, a major success that changed expectations inside and outside the organization.