busybox.inc: add tail symlink so busybox can commit suicide cleanly
update-alternatives-opkg uses tail, which requires a temporary symlink
on tmpdir during removal, to avoid errors of the type:
/usr/bin/update-alternatives: line 113: tail: command not found
Signed-off-by: Alejandro del Castillo <alejandro.delcastillo@ni.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>