Export back-ends: Apply changes to export functions

Export back-ends: Apply changes to export functions

* contrib/lisp/ox-confluence.el (org-confluence-export-as-confluence):
* contrib/lisp/ox-deck.el (org-deck-export-as-html,
  org-deck-export-to-html):
* contrib/lisp/ox-freemind.el (org-freemind-export-to-freemind):
* contrib/lisp/ox-groff.el (org-groff-export-to-groff,
  org-groff-export-to-pdf):
* contrib/lisp/ox-koma-letter.el (org-koma-letter-export-as-latex,
  org-koma-letter-export-to-latex, org-koma-letter-export-to-pdf):
* contrib/lisp/ox-rss.el (org-rss-export-as-rss,
  org-rss-export-to-rss):
* contrib/lisp/ox-s5.el (org-s5-export-as-html,
  org-s5-export-to-html):
* contrib/lisp/ox-taskjuggler.el (org-taskjuggler-export):
* lisp/ob-haskell.el:
* lisp/ox-ascii.el (org-ascii-export-as-ascii,
  org-ascii-export-to-ascii):
* lisp/ox-beamer.el (org-beamer-export-as-latex,
  org-beamer-export-to-latex, org-beamer-export-to-pdf):
* lisp/ox-html.el (org-html-export-as-html, org-html-export-to-html):
* lisp/ox-icalendar.el (org-icalendar-export-to-ics):
* lisp/ox-latex.el (org-latex-export-as-latex,
  org-latex-export-to-pdf):
* lisp/ox-man.el (org-man-export-to-man, org-man-export-to-pdf):
* lisp/ox-md.el (org-md-export-as-markdown,
  org-md-export-to-markdown):
* lisp/ox-odt.el (org-odt-export-to-odt):
* lisp/ox-org.el (org-org-export-as-org, org-org-export-to-org):
* lisp/ox-publish.el (org-publish-org-to):
* lisp/ox-texinfo.el (org-texinfo-export-to-texinfo,
  org-texinfo-export-to-info):
* testing/lisp/test-ob-exp.el (test-ob-exp/org-babel-exp-src-blocks/w-no-file):