Reviewed By: Brian Behlendorf, Dirk vanGulik

Allow each resource to have more than one content-language associated with
it. Update mod_mime to allow files to have multiple language extensions
(eg foo.en.fr.html). Add new request_rec element 'content_languages' to
hold an array of the languages, and deprecate use of 'content_language'.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@76924 13f79535-47bb-0310-9956-ffa450edef68