toybox-inittab does not unpack source files into S, so
the archiver cannot see them. We copy them to a sub-directory
in order to keep the originals available if running do_configure()
(again) without first running do_unpack().
Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>