The following changes are to

The following changes are to
utilize key-translation-map instead of minor mode map.
(encoded-kbd-iso2022-non-ascii-map): Delete it.
(encoded-kbd-coding, encoded-kbd-handle-8bit): Delete them.
(encoded-kbd-last-key): New function.
(encoded-kbd-iso2022-single-shift): New function.
(encoded-kbd-iso2022-designation)
(encoded-kbd-self-insert-iso2022-7bit)
(encoded-kbd-self-insert-iso2022-8bit)
(encoded-kbd-self-insert-sjis, encoded-kbd-self-insert-big5)
(encoded-kbd-self-insert-ccl): Make them suitable for bindings in
key-translation-map.
(encoded-kbd-setup-keymap): Setup key-translation-map.
(saved-key-translation-map): New variable.
(encoded-kbd-mode): Save/restore key-translation-map.  Adjusted
for the change of encoded-kbd-setup-keymap.