plugins onAutoload now only overloads if necessary (extlibs etc.)

lib/plugin.php now has a parent onAutoload function that finds most common
files that are used in plugins (actions, dataobjects, forms, libs etc.) if
they are put in the standardised directories ('actions', 'classes', 'forms',
'lib' and perhaps some others in the future).

plugins/ModLog/ModLogPlugin.php

@@ -71,28 +71,6 @@ class ModLogPlugin extends Plugin
         return true;
     }
 
-    /**
-     * Load related modules when needed
-     *
-     * @param string $cls Name of the class to be loaded
-     *
-     * @return boolean hook value; true means continue processing, false means stop.
-     */
-
-    function onAutoload($cls)
-    {
-        $dir = dirname(__FILE__);
-
-        switch ($cls)
-        {
-        case 'ModLog':
-            include_once $dir . '/'.$cls.'.php';
-            return false;
-        default:
-            return true;
-        }
-    }
-
     function onEndGrantRole($profile, $role)
     {
         $modlog = new ModLog();