Code review comment for lp:~raof/mir/probe-client-drivers

There's a hint in the dlopen docs about how it might be achieved:

   dlopen()
       ...
       o (ELF only) If the executable file for the calling program contains
           a DT_RPATH tag, and does not contain a DT_RUNPATH tag, then the
           directories listed in the DT_RPATH tag are searched.