vim-patch:7.4.419

Problem:    Whan part of a list is locked it's possible to make changes.
Solution:   Check if any of the list items is locked before make a change.
            (ZyX)

https://code.google.com/p/vim/source/detail?r=v7-4-419
Merge pull request #1320 from splinterofchaos/ll-lock

vim-patch:7.4.419