[auth] Use cubes_root to find auth files.
[auth] Use cubes_root to find auth files.

noyeitan/cubes,zejn/cubes,ubreddy/cubes,pombredanne/cubes,zejn/cubes,ubreddy/cubes,cesarmarinhorj/cubes,noyeitan/cubes,pombredanne/cubes,jell0720/cubes,pombredanne/cubes,zejn/cubes,jell0720/cubes,jell0720/cubes,cesarmarinhorj/cubes,cesarmarinhorj/cubes,ubreddy/cubes,noyeitan/cubes