Actress-commedienne-vocalist extraordinaire Klea Blackhurst is certifiably "one of the girls""Jerry Herman's girls, that is. Blackhurst earned the title playing Dolly Levi at Goodspeed Opera House during the 50th anniversary run of Hello, Dolly!"the musical that put Herman on the Broadway map. In her recent three-show run at Birdland Theater, with an extraordinary One of the Girls: the Words and Music of Jerry Herman…