Squashed 'bundle/Ack.vim/' content from commit 303bcef

git-subtree-dir: bundle/Ack.vim
git-subtree-split: 303bceff1c8ab1145d114083582b1aeac9de7a85
Merge commit '58e8662e083ea2069a745271993d9b4c46f109db' as 'bundle/Ack.vim'