OS-2401 imgadm support for incremental images
OS-1920 src/img/lib/imgadm.js "_installImage" is a beast, refactor
OS-2401 imgadm support for incremental images (missing file from manifest)
OS-2403 'imgadm create --publish ...' passes incorrect path to the publish subcmd if compression is used
Merge branch 'master' of git://github.com/joyent/smartos-live into ec