build: update gnulib submodule to latest

Fixes a bits/long-double.h include build issue on some systems.

* bootstrap: Sync new --version option from gnulib.
* gnulib: Update to lastest.
Reported by Carl Edquist

diff --git a/bootstrap b/bootstrap
index c17a36f1fecbec6e2d98543a3051c5cc5e9ccca4..73365985004eb3dbe0cbeedec0fe4b2c317a81cc 100755 (executable)
--- a/bootstrap
+++ b/bootstrap
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Print a version string.
-scriptversion=2021-01-10.00; # UTC
+scriptversion=2021-04-11.09; # UTC
 
 # Bootstrap this package from checked-out sources.
 
@@ -115,6 +115,12 @@ Running without arguments will suffice in most cases.
 EOF
 }
 
+copyright_year=`echo "$scriptversion" | sed -e 's/[^0-9].*//'`
+copyright="Copyright (C) ${copyright_year} Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+
 # warnf_ FORMAT-STRING ARG1...
 warnf_ ()
 {
@@ -337,6 +343,12 @@ do
   --help)
     usage
     exit;;
+  --version)
+    set -e
+    echo "bootstrap $scriptversion"
+    echo "$copyright"
+    exit 0
+    ;;
   --gnulib-srcdir=*)
     GNULIB_SRCDIR=${option#--gnulib-srcdir=};;
   --skip-po)

diff --git a/gnulib b/gnulib
index 354b9691accd00a531358b652689ce7f580fbe54..c499a3c497de473fd6a2ee78a76402b8846cac8a 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 354b9691accd00a531358b652689ce7f580fbe54
+Subproject commit c499a3c497de473fd6a2ee78a76402b8846cac8a