Update tree for 4.3 compatibility

Removed old unused junk. Fixed up recovery.fstab
Bring SmallSystemStub into wingray tree as TinyXoom
Build HackersKeyboard prebuilt replacing LatinIME
Use stingray_selinux_defconfig for kernel

Change-Id: I9d565805bc74ad3628d63a28d78352aed8a5ce4f