Update to the newest gnulib.

diff --git a/gnulib b/gnulib
index 2c83b72122d32c0583cd4ab3b2c98aa61f69f034..b82548a7dffb05f6707454ccdaa630fa4484172e 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 2c83b72122d32c0583cd4ab3b2c98aa61f69f034
+Subproject commit b82548a7dffb05f6707454ccdaa630fa4484172e