Squashed '.vim/bundle/surround/' changes from 1a73f60..02199ea

02199ea Support to disable mappings only for insert mode
2cc734f Default to automatic indenting
0b2c9ff surround.vim 2.0
4c9a4e0 Add a lisp function call replacement
29afa29 Add : replacement
1c9d8e6 Add leading space replacement
ac67c1a Remove documentation of LaTeX expansion
f57e5aa Fix deletion of delimiters on their own lines

git-subtree-dir: .vim/bundle/surround
git-subtree-split: 02199ea0080d744ec76b79d74ce56d51d25cf7ae
Merge commit 'a657582bb96a2ec2d0ec853b3c78384e186af707'