In Drupal v7.0 index.php file:

define('DRUPAL_ROOT', getcwd());

What is the point of using getcwd() and not
dirname(__FILE__)
instead?
getcwd() will rely on the directory set by web server, right? while dirname(__FILE__)  is independent.

I used to hack bootstrap.inc in Drupal-6.x to add this constant, but now it appears in every .php file directly inside the Drupal directory, what about moving it to bootstrap.inc?

Thanks,
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