Two stars. Rated PG. 110 minutes. Dragan Tasic, Broad Green PicturesOmara Portuondo, Gilberto ‘Papi’ Oviedo and Papi Oviedo in “Buena Vista Social Club: Adios.”In the year or so after its release, the 1997 album “Buena Vista Social Club” became a worldwide recording phenomenon. In 1996, American guitarist Ry Cooder had assembled Cuba’s most talented musicians — many of them well into their 70s — and invited them play standards in the traditional “Son Cubano” style.