Merge branch 'jf/am-failure-report'

* jf/am-failure-report:
  git-am: re-fix the diag message printing
  git-am: Make it easier to see which patch failed

Author: gitster

git-am.sh

@@ -510,7 +510,7 @@ do
 	fi
 	if test $apply_status != 0
 	then
-		echo Patch failed at $msgnum.
+		printf 'Patch failed at %s %s\n' "$msgnum" "$FIRSTLINE"
 		stop_here_user_resolve $this
 	fi