made a method for setting external save location on android

src/modules/filesystem/Filesystem.h

@@ -79,12 +79,26 @@ public:
 	 **/
 	virtual bool setupWriteDirectory() = 0;
 
+	/**
+	 * This sets the save location on Android. 
+	 * False for internal, true for external
+	 * @param external Bool for whether 
+	 * Android should use external file storage.
+	**/
+	virtual void setAndroidSaveExternal(bool useExternal = false);
+
+	/**
+	 * Gets whether the Android save is external.
+	 * Returns a bool.
+	**/
+	virtual bool isAndroidSaveExternal() const; 
+
 	/**
 	 * Sets the name of the save folder.
 	 * @param ident The name of the game. Will be used to
 	 * to create the folder in the LOVE data folder.
 	 **/
-	virtual bool setIdentity(const char *ident, bool appendToPath = false, bool internalStorage = false) = 0;
+	virtual bool setIdentity(const char *ident, bool appendToPath = false) = 0;
 	virtual const char *getIdentity() const = 0;
 
 	/**
@@ -263,6 +277,10 @@ public:
 	 **/
 	virtual std::string getExecutablePath() const;
 
+private:
+
+	//should we save external or internal for Android
+	bool useExternal;
 }; // Filesystem
 
 } // filesystem