Issue 775309: button methods tkButtonDown, etc don't work

The Tkinter.Button methods tkButtonDown, etc. don't work in Python 2.2.2 or 2.3b2. Sample traceback:

Traceback (most recent call last):
  File "/usr/local/lib/python2.2/lib-tk/Tkinter.py", line 1300, in __call__
    return apply(self.func, args)
  File "/Users/rowen/PythonRO/RO/Wdg/ScriptWindow.py", line 90, in run
    exec script in globals, locals
  File "<string>", line 1, in ?
  File "/usr/local/lib/python2.2/lib-tk/Tkinter.py", line 1831, in tkButtonDown
    self.tk.call('tkButtonDown', self._w)
TclError: invalid command name "tkButtonDown"

I'm not sure what's going on. I've not even been able to find tkButtonDown in the tcl/tk documentation, though a google search come up with some hits for Tcl/Tk 8.3 so it clearly existed or exists.

Details:
- This is on MacOS X 10.2.6, though I doubt it matters
- Python 2.2.2 is a standard unix build with unix/X Tcl/Tk 8.4.1 (all built from source) running with Apple's X11
- MacPython 2.3b2 (via binary installer) with aqua Tcl/Tk 8.4.3 (built from source)

tkButtonDown and co. are long gone, you shouldn't be relying on them. If
you get tk sources, you will see that tkButtonDown is called when you do
btn.event_generate('<1>').

The best thing to do here is actually remove these methods that call
commands that shouldn't be used anymore and are not directly available.