* libguile/lightning/: New directory, made by the following commands:
git remote add lightning https://git.savannah.gnu.org/git/lightning.git
git merge -s ours --no-commit --allow-unrelated-histories lightning/master
git read-tree --prefix=libguile/lightning/ -u lightning/master
In theory we will be able to update via:
git merge -s subtree lightning/master
