Fix the action bar menu layout to use the correct divider drawable.

Change-Id: I9f9fe8318cbad3cfe4e34a37204a6c82a2e9a0c6

Author: adamp

core/res/res/layout/action_menu_layout.xml

@@ -18,6 +18,6 @@
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
-     android:divider="?android:attr/dividerVertical"
+     android:divider="?android:attr/actionBarDivider"
      android:dividerPadding="12dip"
      android:gravity="center_vertical" />