...and remove some unncessary using directives/declarations, in preparation of
removing now-unnecessary #includes from cppumaker-generated files, post
e57ca02849 "Remove dynamic exception
specifications".
Change-Id: Iaf1f268871e2ee1d1c76cf90f03557527ebc9067
XML dialogs. This code is used to (de)serialize basic dialogs to XML for storage inside documents. While the XML -appears- to have some hierarchical structure, that is only a fabrication, parsing and underlying toolkit widget structure is sadly linear and flat.