If you get a multipart message but the MIME headers are removed by
some agent, this patch enables pgnus display it as original one by
pressing 'W M r' or clicking menu 'Article/MIME/Broken multipart'.

1999-07-01  Shenghuo ZHU  <zsh@cs.rochester.edu>

	* gnus-art.el (article-restore-broken-multipart): New function.
	* gnus-sum.el: Add menu and key.