Switch updates to apply to 07 draft.  Removed the old pending status from XSD.  Referenced Trung Tran and Rubens Kuhl for the statuses change.  Updates samples to match new XSD.
1. Added text related to the use of RFC 5731 pendingCreate to the Application Identifier section.
2. Added the Poll Messaging section to define the use of poll messaging for intermediate state transitions and pending action poll messaging for final state transitions.