pybliographer 1.2.15 license change

[Zoltan Kota]

Hi,

I have just built pybliographer-1.2.15 for rawhide. The documentation
of the program was converted into Mallard, and it's license changed to
Creative Commons.
So, the license changed from GPLv2+ and GFDL to GPLv2+ and CC-BY-SA.

Zoltan