Merge branch 'pt/am-tests'

* pt/am-tests: t3901: test git-am encoding conversion t3418: non-interactive rebase --continue with rerere enabled t4150: tests for am --[no-]scissors t4150: am with post-applypatch hook t4150: am with pre-applypatch hook t4150: am with applypatch-msg hook t4150: am --resolved fails if index has unmerged entries t4150: am --resolved fails if index has no changes t4150: am refuses patches when paused t4151: am --abort will keep dirty index intact t4150: am fails if index is dirty t4150: am.messageid really adds the message id