Update gnulib.

diff --git a/gnulib b/gnulib
index c96bab3fee48a9df55e7366344f838e1fc785c28..03e96cc338b5237e15fce73e9423526969ee768a 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit c96bab3fee48a9df55e7366344f838e1fc785c28
+Subproject commit 03e96cc338b5237e15fce73e9423526969ee768a