i'm not too sure of the history of mod_resource but it seems to be phased out.

looking at upgrade scripts (mod_folder) resources seem to have been moved out of mod_resource.
mod_resource seems to be obsolete. greped

with only results from upgrade files.

we need to create search/document/modulename_document.php for all these resources that were moved out and into their own modules.

when this is done we can remove (i suppose) the search/document/resource_document.php altogether.