vim-patch:7.4.375

Problem:    Test 63 fails when run with GUI-only Vim.
Solution:   Add guibg attributes. (suggested by Mike Soyka)

https://code.google.com/p/vim/source/detail?r=v7-4-375

src/nvim/version.c

@@ -266,7 +266,7 @@ static int included_patches[] = {
   //378,
   377,
   376,
-  //375,
+  375,
   374,
   373,
   372,