A Rs 2.5-crore Himalayan drama with a cast of non-professional actors has become the unlikely flashpoint in a growing row over how Indian cinemas divide their screens between blockbusters and smaller films.The All India Cine Workers Association (AICWA) has asked Union Information and Broadcasting Minister Ashwini Vaishnaw to investigate why Vinod Kapri’s Pyre was pushed out of most theatres after Ramayana opened on November 5. The association…