7225161 Launcher needs to add android:supportsRtl="true" in his AndroidManifest

- add basic RTL support in the AndroidManifest so that Widgets will be able
to support RTL too
- force LTR layout direction to AppsCustomizeTabHost so that we dont have to
deal with layout mirroring yet

(do not need to force also LTR layout direction to Wallpaper activity and fragment
as another CL is removing the ActionBar on them)

Change-Id: I66623a3fcec0d7adef62b0ab8c8b2170e09f1b1b

AndroidManifest.xml

@@ -66,7 +66,8 @@
         android:label="@string/application_name"
         android:icon="@drawable/ic_launcher_home"
         android:hardwareAccelerated="true"
-        android:largeHeap="@bool/config_largeHeap">
+        android:largeHeap="@bool/config_largeHeap"
+        android:supportsRtl="true">
         <activity
             android:name="com.android.launcher2.Launcher"
             android:launchMode="singleTask"

res/layout/apps_customize_pane.xml

@@ -22,7 +22,8 @@
         android:orientation="vertical"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:visibility="gone">
+        android:visibility="gone"
+        android:layoutDirection="ltr">
         <!-- The layout_width of the tab bar gets overriden to align the content
              with the text in the tabs in AppsCustomizeTabHost. -->
         <FrameLayout