Some refactoring of how handlers are handled, particularly with their default options. This is an unfortunately widespread change and will affect modules utilizing the API.

Redo some form stuff to make it easier to choose the next form when chaining; and add some new chaining options. This commit will require you to visit admin/build/modules to reset the menu or the UI will stop working.

#236786: (by KarenS) Make sure all views.*.inc files can be loaded from the module's path or module_path/include directory.

#235459: include leading . on all includes; also turn all include_once into require_once for efficiency.

#216819: by csevb10: $language is now an object and causes errors in caching if not treated properly.

Checkpoint checking. UI is getting better, but it is also getting further away from what currently runs, so when this is done a bunch of refactoring is going to have to happen.

Very early checking for Views 2 for Drupal 6. Currently query.inc looks good and view.inc can at least load and save views, though the schema needs more tweaks.