Function printRSSHeaderLink

Prints the RSS link for use in the HTML HEAD

Package: plugins\feed
Author: Stephen Billard (sbillard)
Located at zp-extensions/rss.php

Parameters summary
`string`	`$option`	<p>type of RSS: "Gallery" feed for latest images of the whole gallery "Album" for latest images only of the album it is called from "Collection" for latest images of the album it is called from and all of its subalbums "Comments" for all comments of all albums and images "Comments-image" for latest comments of only the image it is called from "Comments-album" for latest comments of only the album it is called from "AlbumsRSS" for latest albums "AlbumsRSScollection" only for latest subalbums with the album it is called from</p>
`string`	`$linktext`	title of the link
`string`	`$lang = ''`	optional to display a feed link for a specific language. Enter the locale like "de_DE" (the locale must be installed on your Zenphoto to work of course). If empty the locale set in the admin option or the language selector (getOption('locale') is used.
`string`	`$addl = NULL`	provided additional data for feeds (e.g. album object for album feeds, $categorylink for zenpage categories