Testsuite failure for gold on x86_64 Fedora 9

[Cary Coutant]

> Yes, thanks.  The compiler supports -mtls-dialect=gnu2 but glibc does
> not.  We just need to fix the configure test for whether glibc
> supports the new relocations.  I assumed that they would be
> implemented by glibc 2.5, but they weren't.  I'm not sure that they
> are implemented even today.  I haven't gotten around to figuring out
> whether and when they are implemented.

There is still a known bug or two in gold with this option that I've
got on my list to fix, but I've been putting it off until I can get
around to building a newer version of glibc to test with.

-cary