bb.org: add /sbin/ /usr/sbin to default path (patch)

Reported-by: Mark Grosen <mark@grosen.org>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
bb.org: add customized uEnv.txt

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
bb.org: move this under ./target/chroot/

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
scripts: moved to https://github.com/RobertCNelson/boot-scripts so we can update in the field

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
cleanup: move generic init scripts under /target/

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