Summary:
Pull Request resolved: https://github.com/facebookresearch/faiss/pull/2782
Add a separate branch for ARM Hamming Distance computations. Also, improves a benchmark for hamming computer.
Reviewed By: mdouze
Differential Revision: D44397463
fbshipit-source-id: 1e44e8e7dd1c5b92e95e8afc754170b501d0feed