[RFC] version.c: mark N/A patches

- Marked "not applicable" patches up to patch 335, plus some "N/A" from the current wiki page
- un-commented some patch numbers that were satisfied by #938

Side note: I noticed that [the wiki page](https://github.com/neovim/neovim/wiki/Merging-patches-from-upstream-vim) shows the patches for "smack support" as RFC but I don't see any pull requests for that.