Disable the design support library and demos

Change-Id: Ia0247179d3230d0ec2a198d458bc417fe3102d9d
diff --git a/samples/SupportDesignDemos/Android.mk b/samples/SupportDesignDemos/Android.mk.disabled
similarity index 100%
rename from samples/SupportDesignDemos/Android.mk
rename to samples/SupportDesignDemos/Android.mk.disabled