Add mka and reposync

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
Backup tool support

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

Conflicts:
	tools/releasetools/ota_from_target_files

Conflicts:
	tools/releasetools/ota_from_target_files
build: edify: use set_metadata for backuptool

Also use saner permissions on backuptool.sh

Change-Id: I50742b51867aa358f5924b8dc208833092a35bd9
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>