Export all symbols on Windows

diff --git a/util b/util
index 75aa895ae74ccd800a9ecd6c802d806ac0c0b3ee..d57546f7b98b4a28b127ce5fde7c7b542519170f 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit 75aa895ae74ccd800a9ecd6c802d806ac0c0b3ee
+Subproject commit d57546f7b98b4a28b127ce5fde7c7b542519170f