[DRE-maint] Bug#651503: rake: dependency on virtual package rdoc pulls in transitional package ruby

[Nathan Stratton Treadway]

> the new dependency on virtual package rdoc pulls in transitional package ruby.
> I'm not sure if this package is to blame. But to me it seems the package rdoc
> and the versioned packages rdoc1.8 and rdoc1.9.1 are virtual packages provided
> by the ruby* packages. Therefore, the dependency on ruby | ruby-interpreter
> should be sufficient.

Right... both the ruby1.8 and ruby1.9.1 packages provide rdoc
internally, so that separate dependency is probably no longer needed. 
Alternatively, the dependency could be changed to something along the
lines of "rdoc | rdoc1.8 | rdoc1.9.1".

There is a similar issue with the "rubygems" dependency, which forces
the installation of the rubygems (1.8) package even though the ruby1.9.1
package itself provides "rubygems1.9.1".  

So, perhaps the rake dependency should be changed to 
  "rubygems1.8 | rubygems1.9.1"
?
						Nathan