* mh-comp.el (mh-letter-menu): Rename

* mh-comp.el (mh-letter-menu): Rename
mh-mhn-compose-external-compressed-tar to
mh-mh-compose-external-compressed-tar. Rename mh-mhn-compose-anon-ftp
to mh-mh-compose-anon-ftp. Rename mh-edit-mhn to mh-mh-to-mime. Rename
mh-mhn-directive-present-p to mh-mh-directive-present-p. Rename
mh-revert-mhn-edit to mh-mh-to-mime-undo. Rename
mh-gnus-pgp-support-flag to mh-pgp-support-flag. Rename
mh-compose-insertion value from 'mhn to 'mh.
(mh-insert-signature): Rename mh-mhn-directive-present-p to
mh-mh-directive-present-p.
(mh-send-letter): Rename mh-mhn-directive-present-p to
mh-mh-directive-present-p. Rename mh-edit-mhn to mh-mh-to-mime.
(mh-letter-mode-map): Rename mh-edit-mhn to mh-mh-to-mime. Rename
mh-mhn-compose-anon-ftp to mh-mh-compose-anon-ftp. Rename
mh-mhn-compose-external-compressed-tar to
mh-mh-compose-external-compressed-tar. Rename mh-revert-mhn-edit to
mh-mh-to-mime-undo. Rename mh-mhn-compose-external-type to
mh-mh-compose-external-type. Rename mh-mhn-compose-anon-ftp to
mh-mh-compose-anon-ftp. Rename mh-mhn-compose-external-compressed-tar
to mh-mh-compose-external-compressed-tar. Rename mh-revert-mhn-edit to
mh-mh-to-mime-undo. Rename mh-mhn-compose-external-type to
mh-mh-compose-external-type.
(mh-send-letter, mh-letter-mode-map): Rename mh-edit-mhn to
mh-mh-to-mime, mh-revert-mhn-edit to mh-mh-to-mime-undo.
(mh-reply, mh-yank-cur-msg, mh-insert-prefix-string): Rename
mh-yank-from-start-of-msg to mh-yank-behavior. (mh-letter-mode,
mh-to-field, mh-to-fcc, mh-insert-signature) (mh-check-whom,
mh-insert-auto-fields, mh-send-letter) (mh-insert-letter,
mh-yank-cur-msg, mh-insert-prefix-string) (mh-fully-kill-draft,
mh-open-line, mh-letter-complete) (mh-letter-complete-or-space,
mh-letter-confirm-address) (mh-letter-next-header-field-or-indent)
(mh-letter-previous-header-field)
(mh-letter-toggle-header-field-display): Sync docstrings with manual.

* mh-customize.el (mh-edit-mhn-hook): Rename to mh-mh-to-mime-hook.
(mh-yank-from-start-of-msg): Rename to mh-yank-behavior.
(mh-compose-insertion): Rename values from 'gnus and 'mhn to 'mh and
user-visible values from mhn and Gnus to MH and MML.
(mh-before-send-letter-hook): Added 'ispell-message option.
(mh-mml-method-default): Rename mh-gnus-pgp-support-flag to
mh-pgp-support-flag. (mh-compose-insertion,
mh-compose-space-does-completion-flag)
(mh-delete-yanked-msg-window-flag) (mh-extract-from-attribution-verb,
mh-ins-buf-prefix) (mh-letter-complete-function,
mh-letter-fill-column) (mh-mml-method-default, mh-signature-file-name)
(mh-signature-separator-flag, mh-x-face-file) (mh-yank-behavior,
mail-citation-hook)
(mh-before-send-letter-hook, mh-mh-to-mime-hook): Sync docstrings with
manual.

* mh-gnus.el (mml-minibuffer-read-disposition): New function provided
for Emacs 21 environments that lack it.

* mh-mime.el (mh-mml-query-cryptographic-method): Use default prompt
convention.
(mh-compose-forward): mh-mh-forward-message requires string arg.
(mh-minibuffer-read-type): New function.
(mh-mhn-args): Rename to mh-mh-to-mime-args.
(mh-mhn-compose-insertion): Rename to mh-mh-attach-file.
(mh-mhn-compose-forw): Rename to mh-mh-forward-message.
(mh-mhn-compose-type): Rename to mh-mh-compose-type.
(mh-mhn-compose-anon-ftp): Rename to mh-mh-compose-anon-ftp. Rename
mh-mhn-compose-external-type to mh-mh-compose-external-type.
(mh-mhn-compose-external-compressed-tar): Rename to
mh-mh-compose-external-compressed-tar. Rename
mh-mhn-compose-external-type to mh-mh-compose-external-type.
(mh-mhn-compose-external-type): Rename to mh-mh-compose-external-type.
(mh-edit-mhn): Rename to mh-mh-to-mime. Rename mh-mhn-args to
mh-mh-to-mime-args. Rename mh-edit-mhn-hook to mh-mh-to-mime-hook. Use
correct program in message.
(mh-mhn-directive-present-p): Rename to mh-mh-directive-present-p.
(mh-mml-directive-present-p): Rename to mh-mml-tag-present-p.
(mh-compose-forward, mh-mh-attach-file) (mh-mh-compose-anon-ftp,
mh-mh-compose-external-compressed-tar) (mh-mh-compose-external-type,
mh-mh-forward-message)
(mh-mml-attach-file): Use mml-minibuffer-read-description,
mh-minibuffer-read-type.
(mh-mime-content-types): Moved comment about only being used in Emacs
20 to docstring.
(mh-mh-compose-external-type): Rename extra-param argument to
parameters. (mh-mml-to-mime, mh-secure-message)
(mh-mml-unsecure-message, mh-mime-display-part)
(mh-mime-display-single): Rename mh-gnus-pgp-support-flag to
mh-pgp-support-flag.
(mh-compose-insertion): Rename mh-mhn-compose-insertion to
mh-mh-attach-file.
(mh-compose-forward): Rename mh-mhn-compose-forw to
mh-mh-forward-message.
(mh-mhn-compose-insertion): Rename mh-mhn-compose-type to
mh-mh-compose-type. (mh-compose-insertion, mh-compose-forward,
mh-mh-to-mime-args) (mh-mh-attach-file, mh-mh-compose-type)
(mh-mh-compose-anon-ftp, mh-mh-compose-external-compressed-tar)
(mh-mh-compose-external-compressed-tar) (mh-mh-compose-external-type,
mh-mh-forward-message) (mh-mh-to-mime, mh-mh-quote-unescaped-sharp,
(mh-mh-to-mime-undo, mh-mh-directive-present-p, mh-mml-to-mime)
(mh-mml-attach-file, mh-secure-message, mh-mml-unsecure-message)
(mh-mml-secure-message-sign, mh-mml-secure-message-encrypt)
(mh-mml-directive-present-p, mh-destroy-postponed-handles)
(mh-display-smileys, mh-display-emphasis, mh-mime-save-parts): Sync
docstrings with manual.

* mh-utils.el (mh-gnus-pgp-support-flag): Rename to
mh-pgp-support-flag.