The heartaches of yesterday provide the belly-laughs of today in this revival of three Oscar candidates from the nickelodeon era. The tearjerkers include "The Romantic Violinist," who can barely scrape a living and "The Mad Duke" who plays double-or-nothing with his wicked twin brother. "An Evil Shuffle," probably the Kefauver Committee of its day, was one of the first motion pictures ever produced, and luridly depicts the curse of gambling.