First and last classes on blocks in regions

Dude! I was just pondering investigating how to do this! :-)

The patch works for me and would be really useful.

Looking at that block_list() part of the patch, I realize it won't work for Context module or other techniques that place blocks without using the block module.

I've modified the technique so that it finds the last block in the region during hook_page_alter().

I left the classes out of the blocks.css in the previous patch. Updated and committed.

http://drupal.org/cvs?commit=499074

Backporting to 6.x-2.x.

Here's the fix I committed. It doesn't add "last" class if you are using Context module (for the reasons stated in #3 above).

http://drupal.org/cvs?commit=501136