Has something changed with respect to the handling of X11 libraries
within pkgsrc between 2006Q2 and 2006Q3?

I was developing a package against a 2006Q2 pkgsrc with
X11_TYPE=xorg.  It was working fine, so I am pretty sure that the
appropriate -Wl,-R... arguments were being passed to the compiler by
the pkgsrc infrastructure.

However, updating pkgsrc to 2006Q3 breaks the package because none of
the X11 libraries are found by the installed programs (although
everything compiles fine).  This suggests to me that something about
the handling of -Wl,-R for xorg may have changed over that time
period.

Can anyone offer clues about what might have happened?  Is there
something I should have done in my package or is this a more general
issue?

Thanks for your help.

Cheers,
Brook