initial
Add 'vendor/' from commit '8103b65ca210f17596dcdc826a2d61c0c14bbae8'

git-subtree-dir: vendor
git-subtree-mainline: 6a9451f90d474feec62884768e681278f201fff6
git-subtree-split: 8103b65ca210f17596dcdc826a2d61c0c14bbae8