added natives to delete outputs

added native to find output
refactored some code

extension.h

@@ -55,12 +55,12 @@ public:
 	 * @param late		Whether or not the module was loaded after map load.
 	 * @return			True to succeed loading, false to fail.
 	 */
-	//virtual bool SDK_OnLoad(char *error, size_t maxlength, bool late);
+	virtual bool SDK_OnLoad(char *error, size_t maxlength, bool late);
 
 	/**
 	 * @brief This is called right before the extension is unloaded.
 	 */
-	//virtual void SDK_OnUnload();
+	virtual void SDK_OnUnload();
 
 	/**
 	 * @brief This is called once all known extensions have been loaded.