D5 Port

Attached is a D5 port like we discussed.

There are some changes to form_alter and the #submit handler for the node forms with taxonomy.

The #submit handler does not get $form_state so #multiple is not available there. As an improvement to the logic, we now check in form_alter if we even need to give the form the #submit and keep track of which vocabularies need to be processed by passing in a custom param to the #submit which contains an array of vids.