move the source tarball unpacking from "download" into a separate
script that could be called offline during LO packaging
Signed-off-by: Michael Meeks <michael.meeks@novell.com>
Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Bjoern Michaelsen <bjoern.michaelsen@gmail.com>