vim-patch: Mark patches 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.
Merge pull request #1752 from oni-link/vim-7.4.402

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