enable onTouchEvent for ViewGroups and add some stubs

src/api-impl/android/view/MotionEvent.java

@@ -1991,7 +1991,7 @@ public final class MotionEvent extends InputEvent {
 	 * that pointer identifier.
 	 */
 	public final int findPointerIndex(int pointerId) {
-		return nativeFindPointerIndex(mNativePtr, pointerId);
+		return 0 /*nativeFindPointerIndex(mNativePtr, pointerId)*/;
 	}
 
 	/**

src/api-impl/android/view/VelocityTracker.java

@@ -9,4 +9,11 @@ public class VelocityTracker {
 	public void addMovement(MotionEvent event) {}
 
 	public void recycle() {}
+
+	public void computeCurrentVelocity(int units, float maxVelocity) {}
+
+	public float getXVelocity(int id) {return 0.f;}
+	public float getYVelocity(int id) {return 0.f;}
+
+	public void clear() {}
 }

src/api-impl/android/view/View.java

@@ -1520,4 +1520,6 @@ public class View extends Object {
 	}
 
 	public void setLayerType(int layerType, Paint paint) {}
+
+	public float getZ() {return 0.f;}
 }

src/api-impl/android/view/ViewGroup.java

@@ -302,6 +302,13 @@ public class ViewGroup extends View implements ViewParent, ViewManager {
 		}
 	}
 
+	protected boolean isChildrenDrawingOrderEnabled() { return false; }
+
+	@Override
+	public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
+		return false;
+	}
+
 	public static class LayoutParams {
 		public static final int FILL_PARENT = -1;
 		public static final int MATCH_PARENT = -1;

src/api-impl/android/view/ViewParent.java

@@ -6,4 +6,6 @@ public interface ViewParent {
 	public boolean isLayoutRequested();
 
 	public void requestDisallowInterceptTouchEvent(boolean disallowIntercept);
+
+	public abstract boolean onStartNestedScroll(View child, View target, int nestedScrollAxes);
 }