Blender Git Loki

Use the new BKE_libblock_copy_nolib function for bNodeTree datablocks
as well.

These were already doing the same thing, just not as nice. Only
difference is the do_action argument (false for BKE_libblock_copy_nolib)
but this is of no consequence because the function is only called for
trees nested inside material, scene, etc., which never have own actions.