[go_proto_src] Symlink instead of copy (#5341)
[go_proto_src] Symlink instead of copy (#5341)


kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe