Recent changes in opkg-utils allow package files to be stored in a different
directory to the package index if desired.
(From OE-Core rev: 237b9700d449de03a3f5dc524c15709f46941cf9)
Signed-off-by: Paul Barker <paul@paulbarker.me.uk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>