FIX: Issue where PropertyDefinition could throw if 'get' was called without having previously called 'set' - due to the implementation user string not getting created until then.  See: http://www.cegui.org.uk/mantis/view.php?id=332
FIX: Issue where PropertyDefinition could throw if 'get' was called without having previously called 'set' - due to the implementation user string not getting created until then.  See: http://www.cegui.org.uk/mantis/view.php?id=332

OpenTechEngine/CEGUI,ruleless/CEGUI,OpenTechEngine/CEGUI,OpenTechEngine/CEGUI,OpenTechEngine/CEGUI,ruleless/CEGUI,ruleless/CEGUI,ruleless/CEGUI