Checked rmail.texi

Checked rmail.texi

* doc/emacs/rmail.texi: Copyedits.  Use 'mail composition buffer' in place
of '*mail*', since Message does not call it that.
(Rmail Reply): Rename rmail-dont-reply-to-names.
\\`info- no longer handled specially.
Update for rmail-enable-mime-composing.
Don't mention 'm' for replies.
Don't mention rmail-mail-new-frame and cancelling, since it does
not work for Message at the moment.

* lisp/mail/rmail.el (rmail-dont-reply-to-names): Mark as obsolete.

* lisp/mail/undigest.el (unforward-rmail-message): Doc fix.

* admin/FOR-RELEASE: Related markup.