move a bunch of functions into Feeds/Article namespaces

+       static function catchupArticlesById($ids, $cmode, $owner_uid = false) {
+       static function getLastArticleId() {
+       static function queryFeedHeadlines($params) {
+       static function getParentCategories($cat, $owner_uid) {
+       static function getChildCategories($cat, $owner_uid) {

move the rest of functions2.php back to functions.php as it is of more manageable size, remove the former

include/digest.php

@@ -60,7 +60,7 @@
 
 						if ($rc && $do_catchup) {
 							if ($debug) _debug("Marking affected articles as read...");
-							catchupArticlesById($affected_ids, 0, $line["id"]);
+							Article::catchupArticlesById($affected_ids, 0, $line["id"]);
 						}
 					} else {
 						if ($debug) _debug("No headlines");