Merge branch 'cc/cherry-pick-series'

* cc/cherry-pick-series: Documentation/revert: describe passing more than one commit Documentation/cherry-pick: describe passing more than one commit revert: add tests to check cherry-picking many commits revert: allow cherry-picking more than one commit revert: change help_msg() to take no argument revert: refactor code into a do_pick_commit() function revert: use run_command_v_opt() instead of execv_git_cmd() revert: cleanup code for -x option