Description:
------------
readlink when called on a directory symlink in Windows 7 returns directory 
separators of '\', whereas seemingly most other filesystem functions return 
directory separators of '/' regardless of host operating system.

Test script:
---------------
<?php
	echo 'Docroot: ' . $_SERVER['DOCUMENT_ROOT'] . '<br />';
	echo 'Readlink: ' . readlink($_SERVER['DOCUMENT_ROOT']) . '<br />';
?>

Expected result:
----------------
Docroot: C:/sites/project
Readlink: C:/work/Project/wwwroot

Actual result:
--------------
Docroot: C:/sites/project
Readlink: C:\work\Project\wwwroot