* mail-source.el (make-source-make-complex-temp-name): Use
make-temp-file.
* mm-util.el (mm-make-temp-file): New function.
* nneething.el (nneething-file-name): Use it.
* mml-smime.el (mml-smime-encrypt): Ditto.
* mm-view.el (mm-inline-wash-with-file): Ditto.
* mm-decode.el (mm-display-external, mm-create-image-xemacs): Ditto.
* gnus-uu.el (gnus-uu-decode-binhex, gnus-uu-decode-binhex-view)
(gnus-uu-digest-mail-forward, gnus-uu-initialize): Ditto.
* gnus-start.el (gnus-slave-save-newsrc): Ditto.
* gnus-fun.el (gnus-convert-image-to-gray-x-face): Ditto.
* gnus-art.el (gnus-mime-print-part): Ditto.