Add files missing from 7.4.408.
diff --git a/src/testdir/test_utf8.ok b/src/testdir/test_utf8.ok
new file mode 100644
index 0000000..c5bed54
--- /dev/null
+++ b/src/testdir/test_utf8.ok
@@ -0,0 +1,4 @@
+start:
+axaa
+xあああ
+bxbb