Fix to check if literal-test-file is writable before checking for bro…
Update FSF's address in GPL notices.
Add product information.
(insert-file-contents-literally-treats-binary): New facility [moved
(insert-file-contents-as-binary): Define as an alias for
`insert-file-contents-literally' if it is not broken.
Rename poem-20.el to pces-20.el.