TUPELO - Sunday night was rock 'n' roll night when the Goo Goo Dolls performed old and new songs at the BancorpSouth Arena.Awash in theatrical smoke and diffuse blue lights, the Dolls opened the night with "Still Your Song."The band followed with "Slide" from the triple-platinum "Dizzy Up the Girl" album. More than 1,300 were in attendance, and many of them stood up, danced and sang along to "Slide" with lead singer John Rzeznik.He called the crowd "small but mighty," and was about to start "Big Machine," when a woman in the audience told him to "Play some music!"Rzeznik took a few