Granular backup & restore:

This patch allows the much requested selection of individual instances of modules within a course to backup and restore.
It needs A LOT of testing and probably some prettyifying too.

mod/data/restorelib.php

@@ -0,0 +1,31 @@
+<?php
+/* THIS IS A STUB RESTORELIB.PHP TO 
+ * DEMONSTRATE THE NEW GRANULAR
+ * BACKUP/RESTORE API.
+ * IT NEEDS TO BE FILLED OUT!!!
+ */
+
+function data_restore_mods($mod,$restore) {
+
+    global $CFG;
+
+    $status = true;
+
+    // this all carries on exactly like normal except where checking for user data do
+    if (restore_userdata_selected($restore,'data',$mod->id)) {
+        // restore userdata, including files.
+    }
+
+    // instead of the old way:
+    // if ($restore->mods['data']->userinfo) {
+
+    
+    // this should be the ONLY CHANGE IN THIS FILE.
+
+    return $status;
+}
+
+
+
+
+?>