Enable radial blur post processing effect for spirit form.

Code for this existed, but it was wrong and never enabled.
This replaces most of the code, and makes it work on widescreen.

BBGE/Effects.h

@@ -34,7 +34,7 @@ class PostProcessingFX
 {
 public:
 	PostProcessingFX();
-	void init(FXTypes type);
+    void init();
 	void update(float dt);
 	void preRender();
 	void render();
@@ -42,20 +42,18 @@ public:
 	void enable(FXTypes type);
 	void disable(FXTypes type);
 	bool isEnabled(FXTypes type);
-	void setRenderLayerRange(int start, int end);
 
-
-	/// misc
+	// blur
 	Vector radialBlurColor;
-#ifdef BBGE_BUILD_OPENGL
-	GLenum format;
-#endif
+    int blurTimes;
+
+    /// misc
 	int renderLayer;
 	int layer;
 	float intensity;
 	int blendType;
+
 protected:
-	int renderLayerStart, renderLayerEnd;
 	bool enabled[FXT_MAX];
 };