Fixed relative link function in apache plugin.

tbrehm

2012-11-06 eaed19f266129ea1c7a09e1e384ba7de43671b9d

 server/plugins-available/apache2_plugin.inc.php

@@ -2557,6 +2557,8 @@
   }

   public function create_relative_link($f, $t) {
      global $app;
		
      // $from already exists
      $from = realpath($f);