Changes since Beth 1.0:
---------------------------
Added -t <title> option

Improved tkerror mechanism. (Due to Tk3.3's dialog tkerror mechanism, this
will be phased out later.)

Changed M-key to M-C-key for certain keys. This allows us to add some extra
Meta-keybindings. Keybind changes:
	M-[Aa] (all) is now M-[Kk].
	C-P (print) is now M-C-p.
	C-i (insert) is now M-C-i.

Added help option: M-C-h forks off Beth interp to browse help.

Added word cmds: M-[bfdtcluae], like Emacs Esc-[bfdtcluae] to Text and Entry.

Changed Escape during Replace mode to toggle between replace, search, and text.

Added Undo feature. See HELP for details.

Made startup shellscript friendlier. (patch by <G.Joly@cs.ucl.ac.uk>)

Made each new interp check to see if another interp is editing the same file. If
so, notify user.
