Description of problem:
dd_rescue innapropriately obsoletes ddrescue, please remove the "obsoletes: ddrescue" line from the spec file.

Version-Release number of selected component (if applicable):
1.14-7.fc9 (current version from the epel5 repository as of the filing of this bug)

How reproducible:
Always

Steps to Reproduce:
1. yum install ddrescue
  
Actual results:
... <snipped yum output>
Package ddrescue is obsoleted by dd_rescue, trying to install dd_rescue-1.12-6.el5.i386 instead
... <snipped yum output>

Expected results:
Install ddrescue, not dd_rescue.

Additional info:
* I believe that at one time in the past the dd_rescue software from http://www.garloff.de/kurt/linux/ddrescue/ was distributed inside a package named ddrescue.

* This was confusing because there is a different piece of software which provides similar functionality called ddrescue from http://www.gnu.org/software/ddrescue/ddrescue.html.  In order to resolve this confusion, dd_rescue was packaged under a package of the same name and was set to obsolete the ddrescue package (which at the time was just a duplicate)

* At some later point, ddrescue was packaged, but dd_rescue was not updated to remove the obsoletes line.

This naming kerfuffle appears to be documented somewhat in bug #434859.  At this point there appears to be no reason for the obsoletes, as the two pieces of software are entirely different alternatives to each other.