Switching the default for -fabi-version

[Florian Weimer]

Andreas Jaeger wrote:

> >> This is the point everyone seems to be missing: libstdc++ compatibility
> >> is *already* going to break in GCC 3.4.
> >
> > Can we fix the 386 breakage at the same time (if it's still there)?
> 
> Which breakage exactly do you mean?

The C++ standard library used to use xaddl by default, which isn't
available on 386.

It was fixed in PR 7926, so it's up to the distributors if they want
to change the ABI to be 386-compatible or not, I guess.