Modifications from Greg Barnett at Crown College to add more admins.

See http://bugs.moodle.org/bug.php?op=show&bugid=202

lib/moodlelib.php

@@ -1339,7 +1339,7 @@ function isadmin($userid=0) {
     global $USER;
 
     if (!$userid) {
-        return $USER->admin;
+        return record_exists_sql("SELECT * FROM user_admins WHERE user='{$USER->id}'");
     }
 
     return record_exists_sql("SELECT * FROM user_admins WHERE user='$userid'");
@@ -1519,6 +1519,13 @@ function get_admin () {
     }
 }
 
+function get_admins() {
+    return get_records_sql("SELECT u.* FROM user u, user_admins a
+                            WHERE a.user = u.id
+                            ORDER BY u.id ASC");
+}
+
+
 function get_teacher($courseid) {
 // Returns $user object of the main teacher for a course
     if ( $teachers = get_records_sql("SELECT u.* FROM user u, user_teachers t