Emacs now advises using "website" (instead of "homepage") and
consequently to use the "URL" comment header instead of "Homepage".
* README:
* README_ELPA:
* doc/org-guide.org (Creating Footnotes):
* doc/org-manual.org (Creating Footnotes):
* etc/styles/README (URL): Prefer "website" to "homepage".
* lisp/*.el:
* mk/org-fixup.el: Replace the "Homepage" header comment with "URL".
Stefan Kangas
Kyle Meyer
Bastien