Better org link handling

[mclearc]

Right now org-autolist checks if the thing at point has org-link as a face, in which case it then follows the link. This isn't very robust as there are registered org-links that might not use the org-link face (e.g. denote links in org). What about a check using something like the following?

(and is-listitem
     (not
      (and org-return-follows-link
           (org-in-regexp org-link-any-re))))

this will check whether the link is any registered one.

EDIT: you could also just do an or with the face as one check and the regexp as the other -- that might be the best solution.