[RFC] vim-patch:7.4.209

Merging vim-patch:7.4.209

Problem:    When repeating a filter command "%" and "#" are expanded.
Solution:   Escape the command when storing for redo. (Christian Brabandt)

https://code.google.com/p/vim/source/detail?r=bb402c49379de97fcd475fbbbbdc5ed41e5dff07