Sync typeshed (#4035)

gvanrossum · web-flow · commit eec674584316 · 2017-09-29T13:58:37.000-07:00
This is to pick up the revert of python/typeshed#1549.
diff --git a/typeshed b/typeshed
@@ -1 +1 @@
-Subproject commit 1a164b630cbb27511ce0da7f2f08e62589858862
+Subproject commit 78587dc89597fa2019e037700f0007607933ce73
