Squashed 'bundle/vim-abolish/' content from commit d64ce06

git-subtree-dir: bundle/vim-abolish
git-subtree-split: d64ce06650cf9b098b5a01c0db53864965d9310b
Merge commit '02fe970b4f0b607ebb8d7c350a3ef2af5432515f' as 'bundle/vim-abolish'