[Yum] repo utility added to download/misc

[seth vidal]

> > it's dirt simple and maybe it will be useful to someone.
> > 
> > http://linux.duke.edu/yum/download/misc/repomanage.py
> 
> Thank you for writing this.  I reduced my repositories by 3 GB across two
> machines already.
> 

cool.

glad it helps.

-sv