rename getViewport/Animator/Layer() to viewport/animator/layers()

- these are composite parts of Map

vtm-android/src/org/oscim/android/Compass.java

@@ -33,7 +33,7 @@ public class Compass {
 				mAngle = event.values[0];
 
 				if (mMap != null) {
-					mMap.getViewport().setRotation(-mAngle);
+					mMap.viewport().setRotation(-mAngle);
 					mMap.updateMap(true);
 				}
 			}
@@ -65,6 +65,6 @@ public class Compass {
 
 	public void disable() {
 		mSensorManager.unregisterListener(mListener);
-		mMap.getViewport().setRotation(0);
+		mMap.viewport().setRotation(0);
 	}
 }

vtm-android/src/org/oscim/android/MapActivity.java

@@ -68,7 +68,7 @@ public abstract class MapActivity extends FragmentActivity {
 		// save the map position
 		MapPosition mapPosition = new MapPosition();
 
-		mMap.getViewport().getMapPosition(mapPosition);
+		mMap.viewport().getMapPosition(mapPosition);
 
 		GeoPoint geoPoint = mapPosition.getGeoPoint();
 

vtm-android/src/org/oscim/android/MapView.java

@@ -184,6 +184,6 @@ public class MapView extends RelativeLayout {
 		mInitialized = (mWidth > 0 && mHeight > 0);
 
 		if (mInitialized)
-			mMap.getViewport().setViewport(width, height);
+			mMap.viewport().setScreenSize(width, height);
 	}
 }