bootstrap: use the upstream repo as git module

.. instead of copying it all the time;  gnulib-tool and bootstrap
are now ready to do this correctly.

Bootstrap upstream is now dual-licensed as MIT/GPLv2+;  so the
sources are redistributed automatically under GPLv3+ license in
in libtool project.

* .gitmodules (bootstrap): New submodule.
* bootstrap.conf (local_gl_dir): Renamed to local_gl_path.
(local_gl_path): Renamed from local_gl_dir.  Two sub-directories
are now mentioned as two --local-dir's are used.
(gnulib_git_submodules): New option to automatically clone the
bootstrap git submodule.
* build-aux/ltmain.in (libtool_options_prep)
(libtool_parse_options): Changing function exit status is not
needed with new options-parser.
* libtoolize.in: Don't func_quote when it is not necessary, don't
set the function return value.
* gl-mod/bootstrap: New git submodule.
* gl/build-aux/bootstrap.in, gl/build-aux/extract-trace,
gl/build-aux/funclib.sh, gl/build-aux/inline-source,
gl/build-aux/options-parser, gl/doc/bootstrap.texi,
gl/modules/all-shells-tests, gl/modules/bootstrap,
gl/modules/extract-trace, gl/modules/funclib.sh,
gl/modules/funclib.sh-tests, gl/modules/inline-source
gl/modules/options-parser, gl/modules/options-parser-tests,
gl/tests/test-all-shells.sh, gl/tests/test-funclib-quote.sh
gl/tests/test-option-parser-helper,
gl/tests/test-option-parser.sh: Files removed, those are
automatically pulled from upstream now.
* bootstrap: Sync with upstream.

1 files changed, 3 insertions, 0 deletions

diff --git a/.gitmodules b/.gitmodules
index bb9e1baf..571bed63 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "gnulib"]
         path = gnulib
         url = git://git.sv.gnu.org/gnulib.git
+[submodule "bootstrap"]
+        path = gl-mod/bootstrap
+        url = https://github.com/gnulib-modules/bootstrap.git