gnulib: update

diff --git a/gnulib b/gnulib
index d9326d0888f9ec970169178ebe83528b3280c521..368a317788935c0423dc2afbd16754d9c7c73a48 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit d9326d0888f9ec970169178ebe83528b3280c521
+Subproject commit 368a317788935c0423dc2afbd16754d9c7c73a48