Allow animation styles to be applied to popup windows.

Window params were not carrying the package name required for loading
animation styles from outside of the android package.

core/java/android/widget/PopupWindow.java

@@ -817,6 +817,7 @@ public class PopupWindow {
      * @param p the layout parameters of the popup's content view
      */
     private void invokePopup(WindowManager.LayoutParams p) {
+        p.packageName = mContext.getPackageName();
         mWindowManager.addView(mPopupView, p);
     }