Revert "Don't return immediately from reboot commands."

This reverts commit 11b8326aa3b6d1f14b9fe289978c44b89554ff8e.
nandroid: Allow tar backups of yaffs2 partitions

Change-Id: I33dca9864b043527640c6586751c9399bc3fb156
clean up unused variables and fix compiler warnings

Change-Id: I3c3e30d5e27706d59be78ec935e8a095ba4ab0c0
update-binary: Add collect_backup_data function

Add a function to identify files being backed up during an update so
they can be managed when applying patches.

Change-Id: Ied18d569a396a7324148d6a93809683673a19403
loki: support new unified device lib using ro.loki_enabled property

- keep/add "ENABLE_LOKI_RECOVERY := true" in device tree
- add "ro.loki_enabled=1" property to unified lib init or system.prop for devices not neededing a unified lib init

exp: http://review.cyanogenmod.org/#/c/59623/

Change-Id: I067cdd8d1e898679e2efc4c49fa45505e1ccf43e
Merge commit 'refs/changes/20/59620/7' of http://review.cyanogenmod.org/CyanogenMod/android_bootable_recovery into kk4.4