Merge branch 'rj/add-chmod-error-message'

Message fix. * rj/add-chmod-error-message: builtin/add: add detail to a 'cannot chmod' error message

Junio C Hamano committed Aug 22, 2017 at 10:29 UTC a75ef3ff99a5a916e5211f38134e3f5a78c08a5e

No changes.