[Yum] Yum replacing x86_64 packages with i386.

[seth vidal]

> /me hands skvidal a hanky. snuffle up old boy! multilib is almost
> in production. wait for some extra special i386 on ia64 pain however,
> then perhaps clear sailing for a bit.
> 
> BTW, qemu-arm WORKSFORME, underneath rpmbuild and rpm next agenda item.
> arch needs to die! die! die!

if I have boost.i386 and boost.x86_64 and something comes up named:
heist and it's i386 - does rpm in fc3 know that heist.i386 should only
obsolete boost.i386 and if so what does that mean for packages that want
to go from i386 to noarch via an obsolete? Does it just follow biarch
branches?

-sv