Add support for creating Workflows

In my current project I need the ability to set up various workflows as part of an Install Profile and/or Module Install.

I'm currently working on a workflow.inc file to simplify this process and should be submitting a patch within the next few days.

I currently have the following functions implemented:
install_batch_create_workflow() -- Creates a series of workflows and their associated states in a single call
install_delete_workflow() -- Deletes a workflow and all associated states
install_get_workflow_id() -- Looks up a workflow id based on a workflow name
install_add_workflow_state() -- Adds a new state to an existing workflow
install_set_workflow_map() -- Maps Content Types to Workflows
install_set_workflow_transitions() -- Sets the state transition rules for a workflow

I still need to implement the following features before uploading the patch:
--Configure workflow comment log settings
--Configure workflow tab permissions
--Configure workflow access control