[tlbuild] test errors on some archs

[Peter Breitenlohner]

On Wed, 24 Sep 2014, Karl Berry wrote:

>    So I have recompiled with -O1 also on i386, but with
>    the same effect.
>
> Try -O0.

if you still have 4.9.0 or 4.8.x around you could try those; 4.8.3 works
nicely for me (on i686).

Regards
Peter