Add high priority poly function. Used by harley.

Src/Graphics/New3D/PolyHeader.cpp

@@ -357,6 +357,11 @@ float PolyHeader::LightModifier()
 	return ((header[6] >> 11) & 0x1F) * (1.0f / 16.0f);
 }
 
+bool PolyHeader::HighPriority()
+{
+	return (header[6] & 0x10) > 0;
+}
+
 //
 // misc
 //

Src/Graphics/New3D/PolyHeader.h

@@ -130,6 +130,7 @@ public:
 
 	//header 6
 	bool	Layered();
+	bool	HighPriority();
 	float	Shininess();
 	int		TexFormat();
 	bool	TexEnabled();