Merging in from the MOODLE_15_QUIZREFACTOR branch.

The quiz module now can handle adaptive questions and can render remote questions via RQP web services.

admin/index.php

@@ -144,7 +144,7 @@
             if (empty($_GET['confirmupgrade'])) {
                 print_header($strdatabasechecking, $stradministration, $strdatabasechecking,
                         "", "", false, " ", " ");
-                notice_yesno(get_string('upgradesure', 'admin', $a->newversion), 'index.php?confirmupgrade=yes', 'index.php');
+                notice_yesno(get_string('upgradesure', 'admin', $a->newversion).'<br />'.get_string('upgradesure', 'quiz'), 'index.php?confirmupgrade=yes', 'index.php');
                 exit;
 
             } else {
@@ -260,11 +260,11 @@
     if (empty($CFG->siteidentifier)) {    // Unique site identification code
         set_config('siteidentifier', random_string(32));
     }
-    
+
 /// Check if the guest user exists.  If not, create one.
     if (! record_exists("user", "username", "guest")) {
-        $guest->auth        = "manual"; 
-        $guest->username    = "guest"; 
+        $guest->auth        = "manual";
+        $guest->username    = "guest";
         $guest->password    = md5("guest");
         $guest->firstname   = addslashes(get_string("guestuser"));
         $guest->lastname    = " ";

lang/en/quiz.php

@@ -314,6 +314,7 @@
 $string['unit'] = 'Unit';
 $string['unknowntype'] = 'Question type not supported at line $a. The question will be ignored';
 $string['unsupportedformulafunction'] = 'The function $a is not supported';
+$string['upgradesure'] = '<div style=\"color: red;\">In particular the quiz module will perform an extensive change of the quiz tables and this upgrade has not yet been sufficiently tested. You are very strongly urged to backup your database tables before proceeding.</div>';
 $string['viewallanswers'] = 'View $a completed quizzes';
 $string['viewallreports'] = 'View reports for $a attempts';
 $string['warningsdetected'] = '$a warning(s) detected';