Copies shared libraries on Linux.

Fixes https://github.com/TauLabs/TauLabs/issues/951. @lilvinz, you should be able to test the other kml fix now.

@guilhermito, @edouard: I'm not sure if this is the best spot to do the copy. Do you have an opinion?

OSX needs to be tested, too, as this same issue might also be present.