vim-patch:7.4.538

Problem:    Tests fail with small features plus Python.
Solution:   Disallow weird combination of options.  Do not set "fdm" when
	    folding is disabled.

https://code.google.com/p/vim/source/detail?r=v7-4-538

src/nvim/version.c

@@ -200,7 +200,7 @@ static int included_patches[] = {
   //541,
   //540 NA
   //539,
-  //538,
+  538,
   //537,
   536,
   //535,