[mock] yum >= 3.0?

[Jeff Sheltren]

I noticed when doing some EPEL dependency checking that the newer  
versions of mock (I'm looking at the spec for 0.7.1-1) have a  
requires on yum >= 3.0 in the spec file.  Is there code in newer  
versions of mock which actually requires yum >= 3.0, or should any  
(~2.2+) version of yum work?

Thanks,
Jeff