amd64/102996: powerpc cross-build fails on amd64 host, works fine on i386

[Peter Grehan]

> This doesn't match alpha (though that only matters if you MFC this).  Seems 
> that a more general purpose solution would be to test TARGET_ARCH and use 
> that to set TARGET properties

  Yes - setting TARGET_64BIT in the appropriate libbfd/Makefile.{arch} 
would be another way. But it's Ruslan's/David's area so I'll leave it up 
to them for the fix.

> (i.e. the bug seems to be that it's setting 
> TARGET properties based on the host arch, which is wrong).

  Agreed !!

later,

Peter.