*added sanity check for mknob (a subset of iemgui) to see if selected status would require object to be highlighted (if inside graph-on-parent, it should be silently selected but not visibly selected)
*fixed regression where selected variable in the old_g_all_guis.inc did not allow for a value larger than 1-bit, resulting in selected=2 being selected=0

give IEMGUI externals their own copy of the old functions so that the new impl of g_all_guis.c can evolve freely