Updated the new module changes to use more compile/link-time checking rather than runtime checking.

src/modules/image/Image.h

@@ -44,9 +44,11 @@ class Image : public Module
 {
 public:
 
-	Image() { moduleType = M_IMAGE; }
 	virtual ~Image() {}
 
+	// Implements Module.
+	virtual ModuleType getModuleType() const { return M_IMAGE; }
+
 	/**
 	 * Creates new ImageData from FileData.
 	 * @param data The FileData containing the encoded image data.