Merge branch 'jk/complete-checkout-sans-dwim-remote'

Completion for "git checkout <branch>" that auto-creates the branch
out of a remote tracking branch can now be disabled, as this
completion often gets in the way when completing to checkout an
existing local branch that happens to share the same prefix with
bunch of remote tracking branches.

* jk/complete-checkout-sans-dwim-remote:
completion: optionally disable checkout DWIM

diff --cc contrib/completion/git-completion.bash
Simple merge