Updated GLI version used in GLM tests

test/external/gli/core/flip.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <array>
+
+#include "../texture2d.hpp"
+#include "../texture2d_array.hpp"
+#include "../texture_cube.hpp"
+#include "../texture_cube_array.hpp"
+
+namespace gli
+{
+	template <typename texture>
+	texture flip(texture const & Texture);
+
+}//namespace gli
+
+#include "flip.inl"