vim-patch:7.4.405

Problem:  Screen updating is slow when using matches.
Solution: Do not use the ">=" as in patch 7.4.362, check the lnum.

https://code.google.com/p/vim/source/detail?r=v7-4-405
Merge pull request #1224 from mhinz/p7.4.405

vim-patch:7.4.405