We were using a deprecated version and with a faulty backuptool.
Use CM releasetools as much as possible
Change-Id: I19fbbcb21b20030f10161fbc798feb02b90a7c7c
The OTA script may be run during a signing process and will not have
OUT variables defined. Use the common methods for getting the boot.img
to match standards.
Change-Id: I4eebf58ec828f18f62176a2862e5fdbb839cb658