package/Makefile.in: Add -rpath-link

As per various email discussions add -rpath-link
to the LDFLAGS.
This definately fixes a few issues for Thomas and myself
Any objections and it can be pulled again.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@...>
Signed-off-by: Daniel Laird <daniel.j.laird@nxp.com>