Update to the newest gnulib.

diff --git a/gnulib b/gnulib
index 0003b01876cb929ab10ac4fe409db20d6e4c1f0e..7ded27a6c89101fce7f00203b3439f8d40f281b4 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 0003b01876cb929ab10ac4fe409db20d6e4c1f0e
+Subproject commit 7ded27a6c89101fce7f00203b3439f8d40f281b4