maint: use a git submodule for gnulib

* .gitmodules: New file, to track gnulib.
* gnulib: New file, created by running this:
git submodule add git://git.sv.gnu.org/gnulib.git gnulib

diff --git a/.gitmodules b/.gitmodules
new file mode 100644 (file)
index 0000000..acb2669
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "gnulib"]
+       path = gnulib
+       url = git://git.sv.gnu.org/gnulib.git

diff --git a/gnulib b/gnulib
new file mode 160000 (submodule)
index 0000000..8af1df8
--- /dev/null
+++ b/gnulib
@@ -0,0 +1 @@
+Subproject commit 8af1df8da0c9a895512f0d44fa7cf7e2dd677ae7