Don't rely on include_path to include files.

Always use dirname() or, once available, ABSPATH.

props ketwaroo, hakre.
fixes #17092.


git-svn-id: https://develop.svn.wordpress.org/trunk@25616 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-cron.php

@@ -23,7 +23,7 @@ define('DOING_CRON', true);
 
 if ( !defined('ABSPATH') ) {
 	/** Set up WordPress environment */
-	require_once('./wp-load.php');
+	require_once( dirname( __FILE__ ) . '/wp-load.php' );
 }
 
 // Uncached doing_cron transient fetch