The bootscripts source directory should not be deleted after installing
the core bootscripts. Currently dropbear instructions say to install
dropbear bootscripts from it in the Beyond section.
Deleting the bootscripts directory accomplishes nothing, but may cause
confusion in Beyond, so make sure users understand that they don't need
to delete it.
BusyBox wanst the startup script to be located at /etc/init.d/rcS.
Our startup scripts store everything in /etc/rc.d and our
startup script is "startup". Symlink created so BusyBox can find
the startup script.
This may change at a later date if startup scripts get renamed to be more
BusyBox friendly.