[RFC] vim-patch: Mark patches 7.4.{402,443,509} as NA

Mark patches 7.4.{402,443,509} as NA

Code modified in patch 7.4.402 and 7.4.443 was introduced with
patch 7.4.399, which is also marked as NA (FEAT_CRYPT was removed).
    
Patch 7.4.509 needs the removed FEAT_CRYPT.

[vim patch 7.4.509](https://code.google.com/p/vim/source/detail?r=v7-4-509)
[vim patch 7.4.443](https://code.google.com/p/vim/source/detail?r=v7-4-443)
[vim patch 7.4.402](https://code.google.com/p/vim/source/detail?r=v7-4-402)
[vim patch 7.4.399](https://code.google.com/p/vim/source/detail?r=v7-4-399)