updates to Drupal 6 module

This site is running a later version of the Drupal 6 module than is currently on drupal.org because I haven't figured out Git yet. The code has been greatly cleaned up and many bugs have been fixed.

* The blocks are now working: You can configure a "Who is chatting" block to show all people in all the chatrooms, or you can show up to two separate chatrooms (e.g. Who is chatting on [chatroom-name]).

* The per-node configuration options didn't use to work. Now they do.

Those are the biggest changes. For all the details, see the README.txt file. The source code can be found here:

http://permutations.com/drupal/phpfreechat6.php