add some stubs needed because of previous commits

Since we now call draw() on View subclasses, we reach some new
codepaths which need new stubs

src/api-impl/android/view/animation/AnimationUtils.java

@@ -8,4 +8,8 @@ public class AnimationUtils {
 	public static long currentAnimationTimeMillis() {
 		return System.currentTimeMillis();
 	}
+
+	public static Interpolator loadInterpolator(Context context, int dummy) {
+		return null;
+	}
 }