By Michael Hirtzer CHICAGO (Reuters) – Lollapalooza, the three-day music festival in Chicago's historic Grant Park, was bigger than ever this year with a lineup that honored its alternative rock roots and broadened its appeal to fans of folk, dance, rap and even country music. A record 300,000 people took in nearly 150 bands playing on eight stages set up across the mile-long park lawn just across the street from the shores of Lake Michigan. The varieties of music were as disparate as the concert attendees. …