wordpress升级到2.1.3了，用svn看了一下改动的文件列表如下：
应该是只多不少，因为有些文件我自己手工改过
改动的文件多，但是代码不是很多，好像是添加了一个filter，有些变量前加了int，有些去掉了int，还有就是attribute_escape和clean_ur处理的变化。
attribute_escape主要是把<，"等做一些处理 clean_ur是对url做一些处理，包括typo的错误 文件列表如下

wp-admin/admin-ajax.php
wp-admin/admin-db.php
wp-admin/admin-functions.php
wp-admin/admin-header.php
wp-admin/bookmarklet.php
wp-admin/custom-header.php
wp-admin/edit-comments.php
wp-admin/edit-form-advanced.php
wp-admin/edit-page-form.php
wp-admin/import/blogware.php
wp-admin/import/dotclear.php
wp-admin/import/livejournal.php
wp-admin/import/mt.php
wp-admin/import/wordpress.php
wp-admin/link-manager.php
wp-admin/page.php
wp-admin/post.php
wp-admin/upgrade.php
wp-admin/upload-functions.php
wp-admin/upload.php
wp-admin/user-edit.php
wp-comments-post.php
wp-content/plugins/akismet/akismet.php
wp-includes/author-template.php
wp-includes/bookmark-template.php
wp-includes/bookmark.php
wp-includes/category-template.php
wp-includes/category.php
wp-includes/classes.php
wp-includes/comment-template.php
wp-includes/comment.php
wp-includes/default-filters.php
wp-includes/feed.php
wp-includes/formatting.php
wp-includes/functions.php 
wp-includes/general-template.php
wp-includes/js/quicktags.js  //加了coolcode的便捷按钮
wp-includes/link-template.php
wp-includes/pluggable.php //修改了utf8邮件主题乱码的问题
wp-includes/post.php
wp-includes/query.php
wp-includes/registration.php
wp-includes/rss.php
wp-includes/script-loader.php
wp-includes/theme.php
wp-includes/user.php
wp-includes/version.php
wp-includes/wp-db.php //添加了$this->query("SET NAMES 'utf8'");
wp-login.php
wp-trackback.php
xmlrpc.php