HWC 1.0
Merge branch 'katkiss-5.0' into katkiss-5.0_HWC1.0
prebuilt busybox
Revert "Revert "Do not use prebuilt busybox for kitkat""

This reverts commit 89598c53b4dcdd65cbcb8236762c3177c4e1115d.
Power menu: add more actions

reboot + longpress to reboot to recovery
airplane
mute
don't support adaptive playback
disable wifi display
misc

+ Add back libhealth
+ high optimization
bt misc