The emacs 20.4-5 packages add global key bindings for \C-h and [delete].
That's REALLY RUDE for those of us who have been using Emacs for years,
have our Emacs configured exactly the way we want it, and don't want
anything to change.

There's already a mechanism in Emacs for making C-h do the right thing on
systems where the backspace key generates C-h.  See, for example, the
"Keyboard Translations" node in the Emacs info page.  Alternatively, people
can remap their backspace key to delete using xmodmap; that is what I do,
and that remapping broke because of the global bindings you added.

And shame on you for making this patently user-visible change without
documenting it in the changelog.