Make nIR_precision script select bands, Add argparse and main function.
Make nIR_precision script select bands,
Add argparse and main function.


Former-commit-id: ac4b800661aca8fdb7d24d954e702c3dd5e26558 [formerly 0f132ed75563e6bb2971b5f346df2aff5961c321] [formerly 639baf77d881f8225a636ca1b53b3697deb76278 [formerly 27fab25dcea8ce85273edccb77993555e34d618a]]
Former-commit-id: cf3097c45fbdd3bf0d7714a4aba09daf5fd03fc6 [formerly f68fed705d80edb13057e8a7b0af3f32518b4cab]
Former-commit-id: 6aecbfb67fa0b82362a4cc1b5133fc5b0b0394e2
jason-neal/eniric,jason-neal/eniric