[Yum] Yum exactarch flag not working right

[seth vidal]

>  
> > My recommendation is to deprecate exactarch and to have yum work the following 
> > way.
> > 
> > 1) if you update packages that in installs the same arch(es) as is already 
> > installed.
> 
> This is exactarch=1.  The option was added precisely because sometimes you need
> to the opposite.
> 

and more to the point the option was added b/c sometimes you never want
the opposite to happen by accident.

glibc.i686 -> glibc.i386?

I remember that fun - esp with nptl.
-sv