Implemented issue 99. http://code.google.com/p/simplesamlphp/issues/detail?id=99

!! IMPORTANT !!
This patch may break existing configurations if custom attributealter functions are used.

To use the new implementation attributealter function must be placed in a specific file for that function. 

Example: attributealter function insertorgname which insert a static organization name in the attribute set.

Function must be placed in file attributealter/insertorgname.php and have the following content.

attributealter/insertorgname.php
<?php

function attributealter_insertorgname($attributes,$spid = null, $idpid=null) {
$attributes['orgname']=array('static name');
}
  




git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@636 44740490-163a-0410-bde0-09ae8108e29a