vim-patch:7.4.537 #2509

Problem:    Value of v:hlsearch reflects an internal variable.
Solution:   Make the value reflect whether search highlighting is actually
            displayed. (Christian Brabandt)

https://github.com/vim/vim/releases/tag/v7-4-537

src/nvim/version.c

@@ -232,7 +232,7 @@ static int included_patches[] = {
   //540 NA
   //539,
   538,
-  //537,
+  537,
   536,
   //535,
   //534 NA