* mml.el (autoload): Autoload fill-flowed-encode.

	* mml.el (autoload): Autoload fill-flowed-encode.
	(mml-buffer-substring-no-properties-except-hard-newlines): New
	function.
	(mml-read-part): Use it.
	(mml-generate-mime-1): Encode format=flowed if appropriate.
	(mml-insert-mime-headers): Insert format=flowed.

	* flow-fill.el (fill-flowed-encode): New function.
	(fill-flowed): Bind fill-column to window width.