i686 build of Fedora Core

[Arjan van de Ven]

> The i686 is really more powerful, it is pipelined, it features hardcoded 
> floating point (FPU), it can process more than 1 instruction per cycle.. 
> but all this features are all wasted if it isn't compiled to use them. 

which is why we do compile for them, or rather we tell gcc to optimize
for them

> GCC can take advantage of all the new instruction provided with i686 
> really well, the builds will be identical to the i386 one and you can 
> provide both archs in two different folders.

the "new" instruction provided by i686 is "cmov", which, btw, isn't
actually faster anymore compared to explict test and jump with p4's and
athlons.


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