Implement rudimentary Lisp-level terminal parameters.

Implement rudimentary Lisp-level terminal parameters.

* lisp/frame.el (terminal-id, terminal-parameters, terminal-parameter)
  (set-terminal-parameter, terminal-handle-delete-frame): New functions.
  (delete-frame-functions): Add to `delete-frame-functions' hook.
  (terminal-parameter-alist): New variable.

* lisp/international/encoded-kb.el (saved-input-mode): Delete variable.
  (encoded-kbd-setup-display): Store the saved input method as a terminal
  parameter.

git-archimport-id: lorentey@elte.hu--2004/emacs--multi-tty--0--patch-373