joyent/smartos-live#366 track the smartos-overlay git revision correctly
Reviewed by: Robert Mustacchi <rm@joyent.com>
joyent/smartos-live#367 tool and template to rebuild vmware image
joyent/smartos-live#370 build_usb can fail if there is already an existing usb image
Reviewed by: Robert Mustacchi <rm@joyent.com>