Sync typeshed (#3449)

gvanrossum · web-flow · commit 847d884beea7 · 2017-05-24T20:28:31.000-07:00
diff --git a/typeshed b/typeshed
@@ -1 +1 @@
-Subproject commit c2e6a6f670f5d75c07eb31cf2509db302825b76d
+Subproject commit c1b7fc70203c4b92577f1f4765e0fdb654a8886c
