fixed s:cleandir().
Merge pull request #82 from popkirby/helpfile_clean_fix

fixed s:cleandir().
Merge pull request #83 from zhaocai/master

Fix autoload function
- Improved for redraw.
- Improved redraw.
- Optimized autoload.
- Improved for log messages.
- Improved documentation.
- Don't save nosync install information.
- Disabled shallow clones in git.
- Fixed initial cursor position in log.
- Improved syntax highlight.
- Check more than ver.7.2
- Improved neobundle/log source.
- Fixed neobundle#util#redraw_echo().
Recursively initialise/update submodules
Fix neobundle#autoload#unite_sources.

Loading all sources at `:Unite source`.
Merge pull request #87 from DeaR/master

`Unite source` の際にautoload/unite_sources指定した物が候補に挙がらない
- Updated documentation.
- Fixed a bit.