Add on(Save|Restore)InstanceState in Android extensions

dependencies/extension-api/src/org/haxe/extension/Extension.java

@@ -145,4 +145,21 @@ public class Extension {
 	}
 
 
+	/**
+	 * Called to retrieve per-instance state from an activity before being 
+	 * killed so that the state can be restored in onCreate
+	 */
+	public void onSaveInstanceState (Bundle outState) {
+
+	}
+
+	/**
+	 * Called after onStart() when the activity is being re-initialized from 
+	 * a previously saved state.
+	 */
+	public void onRestoreInstanceState (Bundle savedState) {
+
+	}
+
+	
 }

templates/android/template/src/org/haxe/lime/GameActivity.java

@@ -498,6 +498,21 @@ public class GameActivity extends Activity implements SensorEventListener {
 	}
 
 	
+	@Override protected void onSaveInstanceState (Bundle outState) {
+		super.onSaveInstanceState(outState);
+		for (Extension extension : extensions) {
+			extension.onSaveInstanceState (outState);
+		}
+	}
+
+	@Override protected void onRestoreInstanceState (Bundle savedState) {
+		super.onRestoreInstanceState(savedState);
+		for (Extension extension : extensions) {
+			extension.onRestoreInstanceState (savedState);
+		}
+	}
+	
+	
 	@Override public void onSensorChanged (SensorEvent event) {
 		
 		loadNewSensorData (event);