GitHub generates tarballs without submodules.
Squashed 'libscrypt/' content from commit 9cf984f

git-subtree-dir: libscrypt
git-subtree-split: 9cf984fcda6f8da18696bb568d31f1e247f88f1d
Merge commit 'cdca3830718595c2cde9c7a824f34920d31939f4' as 'libscrypt'