bugfix: for some reason Debian Jessie failes to mount on first try.. give it 5 seconds and try again...

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
distro_defaults: mmcargs always set bootargs in the past...

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
distro: jessie beta 2 is out

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>