gnulib: update submodule to new repository.

* configure.ac: Update autoconf requirement for bootstrapping to 2.64.
* README.md: Update note concerning autoconf version requirement.
* bootstrap: Propogate change to GPL license from GPL 3 to GPL 2.

6 files changed, 8 insertions, 7 deletions

diff --git a/.gitmodules b/.gitmodules
index 571bed63..e561a15b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "gnulib"]
         path = gnulib
-        url = git://git.sv.gnu.org/gnulib.git
+        url = git://git.savannah.gnu.org/gnulib.git
 [submodule "bootstrap"]
         path = gl-mod/bootstrap
         url = https://github.com/gnulib-modules/bootstrap.git
diff --git a/README.md b/README.md
index 0f25db20..0984306c 100644
--- a/README.md
+++ b/README.md
@@ -191,7 +191,7 @@ send the file `tests/testsuite.log` to the [bug mailing list][].
           co -d libtool HEAD
 
 * Before you can build from git, you need to bootstrap.  This requires:
-  - Autoconf 2.62 or later
+  - Autoconf 2.64 or later
   - Automake 1.11.1 or later
   - Help2man 1.29 or later
   - Xz 4.999.8beta or later (from [tukaani.org](http://tukaani.org/xz))
diff --git a/bootstrap b/bootstrap
index 16236e9a..8e0b5e83 100755
--- a/bootstrap
+++ b/bootstrap
@@ -12,7 +12,7 @@
 # Copyright (C) 2010-2019, 2021 Bootstrap Authors
 #
 # This file is dual licensed under the terms of the MIT license
-# <https://opensource.org/license/MIT>, and GPL version 3 or later
+# <https://opensource.org/license/MIT>, and GPL version 2 or later
 # <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
 # these licenses when using or redistributing this software or any of
 # the files within it.  See the URLs above, or the file `LICENSE`
@@ -238,7 +238,7 @@ scriptversion=2019-02-19.15; # UTC
 # Copyright (C) 2004-2019, 2021 Bootstrap Authors
 #
 # This file is dual licensed under the terms of the MIT license
-# <https://opensource.org/license/MIT>, and GPL version 3 or later
+# <https://opensource.org/license/MIT>, and GPL version 2 or later
 # <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
 # these licenses when using or redistributing this software or any of
 # the files within it.  See the URLs above, or the file `LICENSE`
@@ -1702,7 +1702,7 @@ func_lt_ver ()
 # Copyright (C) 2010-2019, 2021 Bootstrap Authors
 #
 # This file is dual licensed under the terms of the MIT license
-# <https://opensource.org/license/MIT>, and GPL version 3 or later
+# <https://opensource.org/license/MIT>, and GPL version 2 or later
 # <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
 # these licenses when using or redistributing this software or any of
 # the files within it.  See the URLs above, or the file `LICENSE`
@@ -2387,7 +2387,7 @@ func_version ()
 # Copyright (C) 2010-2019, 2021 Bootstrap Authors
 #
 # This file is dual licensed under the terms of the MIT license
-# <https://opensource.org/license/MIT>, and GPL version 3 or later
+# <https://opensource.org/license/MIT>, and GPL version 2 or later
 # <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
 # these licenses when using or redistributing this software or any of
 # the files within it.  See the URLs above, or the file `LICENSE`
diff --git a/configure.ac b/configure.ac
index 73eaa5cd..64c76426 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,7 +24,7 @@
 ####
 
 
-AC_PREREQ(2.63)
+AC_PREREQ(2.64)
 dnl Oldest automake required for bootstrap is below in AM_INIT_AUTOMAKE.
 
 
diff --git a/gnulib b/gnulib
-Subproject 426f44034396d52d6981f3c6e79e089bbacce64
+Subproject a5218207e5f92e152a34994cce4aa415b1eb25c
diff --git a/m4/.gitignore b/m4/.gitignore
index 1facea7d..5eac7ce7 100644
--- a/m4/.gitignore
+++ b/m4/.gitignore
@@ -4,3 +4,4 @@
 /gnulib-comp.m4
 /gnulib-tool.m4
 /ltversion.m4
+/zzgnulib.m4