Add text anti-aliasing, disable arcade mode

PortabilityLayer/AntiAliasTable.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace PortabilityLayer
+{
+	struct RGBAColor;
+
+	struct AntiAliasTable
+	{
+		// Striped 256x16 because constant background color is more likely than constant sample
+		uint8_t m_aaTranslate[256][16];
+
+		void GenerateForPalette(const RGBAColor &baseColor, const RGBAColor *colors, size_t numColors);
+	};
+}