(terminal-map, etc.): Use default bindings, not fillarray.
Make the maps sparse.
(terminal-meta-map): New map; lets us make ESC a prefix key.
(terminal-map): Bind ESC to terminal-meta-map.
(te-more-break-unread): Handle non-char as last-input-char.
(te-filter): Delete code that worked with meta-flag.
(terminal-emulator): Don't look at meta-flag.
(terminal-mode): Don't make meta-flag local.
(te-stty-string): Quote the args that have ^. Add pass8.
Changes that esr made in the previous version but didn't describe in detail:
Some defvars moved.
Defvars added for many variables.
(te-stty-string): Specify the characters explicitly--not `stty dec'.
Discussion with Jim Blandy reveals that it can no longer be made to work
properly at all due to changes in Emacs's terminal-control interface. So
it's getting deep-sixed, but these cleanups go in on the outside chance that
we want to revive it someday.
* vip.el (vip-escape-to-emacs, vip-prefix-arg-value,
vip-prefix-arg-com): Use unread-command-event instead of
unread-command-char; respect its new semantics.
* terminal.el (te-escape-extended-command-unread): Same.
