*Add ar_parent_id

maintenance/archives/patch-ar_parent_id.sql

@@ -0,0 +1,3 @@
+-- Adding ar_deleted field for revisiondelete
+ALTER TABLE /*$wgDBprefix*/archive
+  ADD ar_parent_id int unsigned default NULL;

maintenance/tables.sql

@@ -384,6 +384,9 @@ CREATE TABLE /*$wgDBprefix*/archive (
   -- Will be NULL for pages deleted prior to 1.11.
   ar_page_id int unsigned,
   
+  -- Original previous revision
+  ar_parent_id int unsigned default NULL,
+  
   KEY name_title_timestamp (ar_namespace,ar_title,ar_timestamp),
   KEY usertext_timestamp (ar_user_text,ar_timestamp)
 

maintenance/updaters.inc

@@ -137,6 +137,7 @@ $wgMysqlUpdates = array(
 	array( 'add_table', 'updatelog',                         'patch-updatelog.sql' ),
 	array( 'add_table', 'category',                          'patch-category.sql' ),
 	array( 'do_category_population' ),
+	array( 'add_field', 'archive',       'ar_parent_id',     'patch-ar_parent_id.sql'),
 	array( 'do_populate_parent_id' ),
 );