gnulib: sync with upstream.

* gnulib: sync with upstream.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>

diff --git a/gnulib b/gnulib
index 8415b6792e53f9aa309caedda799f9d9f3dffc53..1b6c775c6b9c8054afcadc0aeb0ae39e81dc6387 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 8415b6792e53f9aa309caedda799f9d9f3dffc53
+Subproject commit 1b6c775c6b9c8054afcadc0aeb0ae39e81dc6387