[Rivet] No analyses if libdir is lib64

[David Grellscheid]

Hi Leif,

> that configure decided to use lib64 instead of lib was that It checked a 
> system-wide environment variable called CONFIG_SITE pointing to a config 
> file where this was specified. Un-setting CONFIG_SITE causes the good 
> old lib directory to be used by configure.

Thanks! Without a Suse system here that would have taken a while to find.

> internally find the path by a call to br_find_lib_dir function in 
> Rivet::getLibPath() which for some reason returns lib rather than lib64.

I was suspecting Binreloc as the culprit. Do we actually still have any
use for it? Andy, what was the motivation to use it in the first place?

Thanks,

  David