[PATCH] ld: -rpath must search under sysroot

[Andy Ross]

Resend with changes.

This reverts the -rpath-link half of the patch.  It was added for
symmetry, but of course I rapidly found a spot in the wild where
-rpath-link was being passed a relative directory inside the build
tree, so interpreting inside sysroot isn't correct per curent usage.

And of course -rpath-link never added the sysroot anyway, so anyone
using it sucessfully must already be prepending the appropriate path.
Clearly compatibility is more important.

Andy