Sort constant group members

...for better diff-ability in the future.

Change-Id: Ic3a374ca8ffff4e88e9ccc9e858e82035dc43695
Update the reference rdbs to libreoffice-4-2-0

...incl. some /** @deprecated */ that had inadvertently been missing from the
original unoidl-read output, and re-apply the fix from
09f9a79b112aae36d54520568962d84a931f6491 "[API CHANGE] fix endCDATA to allow
throwing css::xml::sax::SAXException."

Change-Id: I5f9001e0cf05ec6cd950011ab307b71811f1a2e1