Update to the newest gnulib.

diff --git a/gnulib b/gnulib
index d2aa9c2fa1dea0b638fa1031a56f690722052279..27d2acd196b983afad774c109966bc7b44c4a85c 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit d2aa9c2fa1dea0b638fa1031a56f690722052279
+Subproject commit 27d2acd196b983afad774c109966bc7b44c4a85c