[RFC] Mark patches 363 and 366 NA; vim-patch:7.4.375

~~[vim-patch:7.4.363](https://code.google.com/p/vim/source/detail?r=v7-4-363) NA~~
>Problem:    In Windows console typing 0xCE does not work.

> Solution:   Convert 0xCE to K_NUL 3. (Nobuhiro Takasaki et al.)

~~[vim-patch:7.4.366](https://code.google.com/p/vim/source/detail?r=v7-4-366) NA~~
>Problem:    Can't run the linebreak test on MS-Windows.

> Solution:   Fix the output file name. (Taro Muraoka)

[vim-patch:7.4.375](https://code.google.com/p/vim/source/detail?r=v7-4-375)
> Problem:    Test 63 fails when run with GUI-only Vim.

> Solution:   Add guibg attributes. (suggested by Mike Soyka)

Yeah, 375 is GUI-only, but I figured it wouldn't do any harm. Why not?