client: eliminated need for duplicate lib copies

The libs can now live happily only in a basepath pk3. See code comment.


There was some discussion in IRC about this earlier today, stemming from:
https://gist.github.com/swillits/631ae0132b5fea1347b5/raw/209206be80249f14bbd3718afef48ac914db9d52/gistfile1.txt

I took a closer look at it and don't see any downsides to this.