[packman] k3b package

[Cristian Morales Vega]

I have been looking at the packages that still use the old ffmpeg and
found the K3B case.
Upstream had a patch since half a year ago. And the thing is the
package in the main OBS has had this patch for a long time (I added it
before it was in upstream's GIT, I guess that's why I didn't submit it
to Packman... and then forgot). The openSUSE package also has another
patch we miss. And some Recommends...

So, I could submit the missing patches to the Packman package. But
does it make sense to just drop the Packman package and link to the
openSUSE one? I think it would be the best option to avoid problems
like this in the future.