Sync typeshed (#4561)

gvanrossum · web-flow · commit b993693e4fd9 · 2018-02-09T16:03:16.000-08:00
diff --git a/typeshed b/typeshed
@@ -1 +1 @@
-Subproject commit 40d6faeccd7e28eef08fed585c13e7c7c8087e48
+Subproject commit c1c9fac63f20ac553de29ccee6affc8abf5520ac
