diff -r 2f6f6f7551ca -r 32102edaa81b web/wp-admin/includes/list-table.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-admin/includes/list-table.php	Mon Nov 19 18:26:13 2012 +0100
@@ -0,0 +1,104 @@
+<?php
+/**
+ * Helper functions for displaying a list of items in an ajaxified HTML table.
+ *
+ * @package WordPress
+ * @subpackage List_Table
+ * @since 3.1.0
+ */
+
+/**
+ * Fetch an instance of a WP_List_Table class.
+ *
+ * @access private
+ * @since 3.1.0
+ *
+ * @param string $class The type of the list table, which is the class name.
+ * @return object|bool Object on success, false if the class does not exist.
+ */
+function _get_list_table( $class ) {
+	$core_classes = array(
+		//Site Admin
+		'WP_Posts_List_Table' => 'posts',
+		'WP_Media_List_Table' => 'media',
+		'WP_Terms_List_Table' => 'terms',
+		'WP_Users_List_Table' => 'users',
+		'WP_Comments_List_Table' => 'comments',
+		'WP_Post_Comments_List_Table' => 'comments',
+		'WP_Links_List_Table' => 'links',
+		'WP_Plugin_Install_List_Table' => 'plugin-install',
+		'WP_Themes_List_Table' => 'themes',
+		'WP_Theme_Install_List_Table' => array( 'themes', 'theme-install' ),
+		'WP_Plugins_List_Table' => 'plugins',
+		// Network Admin
+		'WP_MS_Sites_List_Table' => 'ms-sites',
+		'WP_MS_Users_List_Table' => 'ms-users',
+		'WP_MS_Themes_List_Table' => 'ms-themes',
+	);
+
+	if ( isset( $core_classes[ $class ] ) ) {
+		foreach ( (array) $core_classes[ $class ] as $required )
+			require_once( ABSPATH . 'wp-admin/includes/class-wp-' . $required . '-list-table.php' );
+		return new $class;
+	}
+
+	return false;
+}
+
+/**
+ * Register column headers for a particular screen.
+ *
+ * @since 2.7.0
+ *
+ * @param string $screen The handle for the screen to add help to. This is usually the hook name returned by the add_*_page() functions.
+ * @param array $columns An array of columns with column IDs as the keys and translated column names as the values
+ * @see get_column_headers(), print_column_headers(), get_hidden_columns()
+ */
+function register_column_headers($screen, $columns) {
+	$wp_list_table = new _WP_List_Table_Compat($screen, $columns);
+}
+
+/**
+ * Prints column headers for a particular screen.
+ *
+ * @since 2.7.0
+ */
+function print_column_headers($screen, $id = true) {
+	$wp_list_table = new _WP_List_Table_Compat($screen);
+
+	$wp_list_table->print_column_headers($id);
+}
+
+/**
+ * Helper class to be used only by back compat functions
+ *
+ * @since 3.1.0
+ */
+class _WP_List_Table_Compat extends WP_List_Table {
+	var $_screen;
+	var $_columns;
+
+	function _WP_List_Table_Compat( $screen, $columns = array() ) {
+		if ( is_string( $screen ) )
+			$screen = convert_to_screen( $screen );
+
+		$this->_screen = $screen;
+
+		if ( !empty( $columns ) ) {
+			$this->_columns = $columns;
+			add_filter( 'manage_' . $screen->id . '_columns', array( &$this, 'get_columns' ), 0 );
+		}
+	}
+
+	function get_column_info() {
+		$columns = get_column_headers( $this->_screen );
+		$hidden = get_hidden_columns( $this->_screen );
+		$sortable = array();
+
+		return array( $columns, $hidden, $sortable );
+	}
+
+	function get_columns() {
+		return $this->_columns;
+	}
+}