* Added caching of some SQL statements
* Added support feed
* Added support for changing the base of the sitemap url to another URL
* Fixed update notifications
* Changed text in XSL template to be more clear about sitemap-index and sub-sitemaps

git-svn-id: https://plugins.svn.wordpress.org/google-sitemap-generator/trunk@904308 b8457f37-d9ea-0310-8a92-e5e31aec5664