build: use gnulib's getopt-gnu module (getopt is now deprecated)

* bootstrap.conf (gnulib_modules): Gnulib's getopt module is now
deprecated; use the new, preferred name, getopt-gnu.
* gnulib: Update to latest.

diff --git a/bootstrap.conf b/bootstrap.conf
index b6623f6..991e5bd 100644 (file)
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -102,7 +102,7 @@ gnulib_modules="
   getline
   getloadavg
   getndelim2
-  getopt
+  getopt-gnu
   getpagesize
   getpass-gnu
   gettext

diff --git a/gnulib b/gnulib
index d93c1f1..2f5181b 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit d93c1f1b00e1dea78b919c7fb7b6ddebecfcf3a5
+Subproject commit 2f5181b1a247323cb2a4a4c6165997674866bb20