create Eagle library for bsdl file
Since Eagle 6.0 I think all the source files (libraries included) are XML. If you were so inclined, I imagine you could convert from the BSDL files to the required XML format programatically (it's all just structured ASCII text after all). You can find the DTD (structure definition) file in the EAGLE docs/ subdirectory of the installation. I doubt anybody has bother to do a BSDL -> EAGLE XML converter tool, but I've been wrong before once or twice.