[Solar-talk] new sitemap class

[Rodrigo Moraes]

Here's an update.

Following Clay's suggestion, I removed 'Google' from the sitemap class
name. Also I moved it to Lux, where our non-app-specific classes are
placed. So it is now Lux_Sitemap and the features are:

* Super simple API to create / update / delete sitemap entries (main
feature! :).
* Manages both types of sitemap files: sitemaps and sitemap indexes.
* Automatically compresses/decompresses the sitemap on save() / load()
based on the file name.
* Automatically pings services on save() if configured, or you can
call ping() manually when necessary.

here it is:

http://lux.googlecode.com/svn/trunk/Lux/Sitemap.php

(no tests yet, build I'll make some soon)

-- rodrigo