SuperTab and snipMate use tab together, IF0 fix, remove some comments
Merge branch 'master' of https://github.com/MoyanXiao/VimShell
Some changes commit, including
    1. add special Grep item "current" for current file
    2. add line move shortcut
    3. add some shortcut for Grep
    4. add some imap for c file
    5. add the key dict file for c