Merge branch 'en/ancestry-path-in-a-range'

"git rev-list --ancestry-path=C A..B" is a natural extension of "git rev-list A..B"; instead of choosing a subset of A..B to those that have ancestry relationship with A, it lets a subset with ancestry relationship with C. * en/ancestry-path-in-a-range: revision: allow --ancestry-path to take an argument t6019: modernize tests with helper rev-list-options.txt: fix simple typo