- Add several PidTag to openchange.ldb folders

- Add several PidTag to openchange.ldb folders
- Add provisioning convenient function which adds attribute/value pair
to a given folder record
- Replace existing special folders reference within Inbox with PidTagIpm* tags
- Add new PidTag values to mapi-properties
- Add a function to libmapiproxy to build a folder EntryID as described in MS-OXODATA
- Add a function which builds special properties for openchangedb folders
- Add PT_BOOLEAN case to openchangedb folder get property function
- Keep a reference to the mailbox username within emsmdb provider context
- Create and return a handle in RegisterNotification