Added the missing _Heteronuclear_xx_list.ID tags.
This was pointed out by Eldon Ulrich <elu att bmrb dot wisc dot edu> in the post at https://mail.gna.org/public/relax-devel/2009-02/msg00025.html (Message-id: <49A78ABD.2050505@...>).
Authored by: bugman 2009-02-27
Parent: [r8882]
Child: [r8884]