(ielm-dynamic-multiline-inputs): New variable.

(ielm-dynamic-multiline-inputs): New variable.
(ielm-return): Support it.

(ielm-print-working-buffer): New command
(ielm-change-working-buffer): New command
(ielm-display-working-buffer): New command
(ielm-map): Bindings for new commands; bindings from
shared-lisp-mode-map; Lemacs support.

(ielm-eval-input): Give bindings in scope during the eval
non-clashing names (ielm- prefix)

(ielm-get-old-input): New function
(inferior-emacs-lisp-mode): Bind it to comint-get-old-input