4.4 fixes

Change-Id: Icde3f10a30e6148f8b120127f377b03ec20562d6
misc tests
ko ?

Change-Id: Ic4dcef91f51a7492881ece8f37f762e7d4943c7a
misc blob compat

Change-Id: Ia4bc02c87a15279a47fd35d9d73f56903b82e0f5
Do not use prebuilt busybox for kitkat

Change-Id: I88e3b932bb819ff7f43caaf1c227580836ab5e59