Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-admin/media.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * Media management action handler.
+ *
+ * This file is deprecated, use 'wp-admin/upload.php' instead.
+ *
+ * @deprecated 6.3.0
+ * @package WordPress
+ * @subpackage Administration
+ */
+
+/** Load WordPress Administration Bootstrap. */
+require_once __DIR__ . '/admin.php';
+
+$parent_file  = 'upload.php';
+$submenu_file = 'upload.php';
+
+wp_reset_vars( array( 'action' ) );
+
+switch ( $action ) {
+	case 'editattachment':
+	case 'edit':
+		if ( empty( $_GET['attachment_id'] ) ) {
+			wp_redirect( admin_url( 'upload.php?error=deprecated' ) );
+			exit;
+		}
+		$att_id = (int) $_GET['attachment_id'];
+
+		wp_redirect( admin_url( "upload.php?item={$att_id}&error=deprecated" ) );
+		exit;
+
+	default:
+		wp_redirect( admin_url( 'upload.php?error=deprecated' ) );
+		exit;
+}