Merge branch 'jk/cached-commit-buffer' into HEAD

* jk/cached-commit-buffer: revision: drop --show-all option commit: drop uses of get_cached_commit_buffer() Git 2.16.2

Junio C Hamano committed Mar 13, 2018 at 13:35 UTC 2ee13a780b1464039b89b9987b1cdd74d9e40780

No changes.