Also, these are the files that get flagged as being modified but haven't been - unless you count the translation into Spanish from English but this was done by the WordPress team.
* WordPress core file modified: license.txt
* WordPress core file modified: readme.html
* WordPress core file modified: wp-admin/setup-config.php
* WordPress core file modified: wp-config-sample.php
* WordPress core file modified: wp-includes/version.php