Update to newest gnulib.

diff --git a/gnulib b/gnulib
index 342e7423fd65e96f83299494d69ddf03e171413e..0949c47c03456dae91c15740731b1350296b0497 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 342e7423fd65e96f83299494d69ddf03e171413e
+Subproject commit 0949c47c03456dae91c15740731b1350296b0497