port Chessboard Renderer to D6

Deadwood has missed a few things. I'm going to submit a patch against HEAD in a couple of days. Including the stylesheet fix from branch DRUPAL-5 also needs to be in there. Future vision: it would be really nice if Chessboard Renderer would provide a chessboard render element builder. But first things first.

This patch brings HEAD to a Drupal 6 version of DRUPAL-5 except for the CCK stuff that is in DRUPAL-5 now but not in HEAD.
In effect this incorporates a couple of fixes in markup/css that have been committed to DRUPAL-5 after the last release.
Not incorporating the unreleased CCK stuff makes it easer to port to 6 and 7.

I see now that development here has been done this way: Only sync changes to HEAD when you're going to start a new branch as described in http://drupal.org/handbook/cvs/branches-and-tags/contributions
Ok, I'm going to try make a patch that ports the current state of DRUPAL-5 instead of the current state of HEAD.

Before I post another patch here I'm proposing to revert the CCK features in DRUPAL-5. See #753848: Let Chessboard Renderer provide services to chess projects that provide game play and storage

If the CCK stuff is (temporarily) removed I will quickly submit patches for straight ports to 6 and 7.

(The field stuff can eventually be added back as a separate module to the different branches.)

Actually, there is probably no real need to do that CCK revert in DRUPAL-5.

The one thing I care about is to port this project quickly to Drupal 6 and 7 without the CCK stuff from the DRUPAL-5 branch for now.

If I submit a patch that brings HEAD to the Drupal 5 state I'm proposing, then that is the point to create a DRUPAL-6--1 branch from, right?

Or could you just bring HEAD to the exact current state of DRUPAL-5, create a DRUPAL-6--1 from there and have us submit patches?

What is needed to get us to Drupal 6 and 7?

Feedback would be much appreciated.

The patch is a straight (but untested) route to a working D6-state of the trunk, so please review.

It does contain slightly more than just an upgrade, because the DRUPAL-5 css fixes are in here as well.

After a slight clean-up I now did a cvs diff -up
And I just realised that when applying this patch it does not handle the adding of the new chessboard.info file properly. I'll come back to this later.

This one is with the theme layer from #765582: Add theming layer to Chessboard Renderer.

Nope, it's this one.

Committed to CVS HEAD.