Update application.ini and removed Staple_Autoload. Staple has been
updated to default to Staple_Autoload also Staple_Autoload is not Namespace
friendly.

Also added require_once to staple config, to load the registry class. This
is needed since the registry is loaded before the autoloader now.

Updated Error.class.php as well to comment out removed main->processheader()
method which has been removed.
Added commet to Application.ini on loader