De-namespaced a class, to make it less verbose.

src/modules/graphics/opengl/ParticleSystem.h

@@ -576,7 +576,7 @@ protected:
 	Vertex *particleVerts;
 
 	// The texture to be drawn.
-	Object::StrongRef<Texture> texture;
+	StrongRef<Texture> texture;
 
 	// Whether the particle emitter is active.
 	bool active;
@@ -656,7 +656,7 @@ protected:
 	std::vector<Colorf> colors;
 
 	// Quads.
-	std::vector<Object::StrongRef<Quad>> quads;
+	std::vector<StrongRef<Quad>> quads;
 
 	bool relativeRotation;