Chaplin **1/2
'Chaplin' Won't Leave You Speechless      By Isa GoldbergRob McClure as Charlie ChaplinA valentine to the movies and to the orphans we all are, the musical "Chaplin," like the "flickers" about the Little Tramp, brings us a smile and perhaps a tear or two. Telling the story of his life while annotating the development of his films, the musical begins with a humorous, compassionate portrait. Depictin…