Introduce 2D All Apps and other support for sapphire-class devices.

AllAppsView is now the 2D, GridView-based version (very
similar to classic Launcher); AllApps3D is the
RenderScript/Rollo implementation.

TODO:
 - some mdpi assets are not in fact mdpi
 - related to above: static wallpapers not working yet
 - add dynamic selection of 2D/3D AA; currently you must
   choose one at build time by picking the appropriate class
   in all_apps.xml (see separate CL for sapphire overlay
   that does this)

Change-Id: I253d98404ea8a329a4049d2e48edd2e5129fa6ba
diff --git a/res/values/config.xml b/res/values/config.xml
new file mode 100644
index 0000000..56717e9
--- /dev/null
+++ b/res/values/config.xml
@@ -0,0 +1,4 @@
+<resources>
+    <integer name="config_allAppsFadeInTime">1000</integer>
+    <integer name="config_allAppsFadeOutTime">250</integer>
+</resources>