[tlbuild] first build for TeX Live 2008

[Karl Berry]

    I'd probably go for the old release 

Yes, that would be better.  Since the TL binaries go directly to users,
the "oldest possible" release is desirable.

As Norbert more or less said, I intend to make the i386-linux binaries
on Debian sarge.  (The build succeeds there already, I just haven't
checked them in quite yet.)

Thanks,
Karl