mesa: Directly include mfeatures.h in files that perform feature tests.
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index 32bf95e..bcde65a 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -33,6 +33,7 @@
 #include "hash.h"
 #include "image.h"
 #include "macros.h"
+#include "mfeatures.h"
 #include "mtypes.h"
 #include "varray.h"
 #include "arrayobj.h"