GitLab

Summary:
Merging wav2vec to master. Includes renames (Cpc -> wav2vec) and some light example files.
Pull Request resolved: https://github.com/fairinternal/fairseq-py/pull/654

Differential Revision: D15913409

Pulled By: alexeib

fbshipit-source-id: f723e6f211706cd9431c7d76dc12c4e80c9cfc80