[RFC] vim-patch:7.4.184

Merging vim-patch:7.4.184

Problem:    match() does not work properly with a {count} argument.
Solution:   Compute the length once and update it.  Quit the loop when at the
            end. (Hirohito Higashi)

https://code.google.com/p/vim/source/detail?r=9ac2fc63501d3eff92446c03b2822b30b169db5a