FIX: include of cstddef header was missing for ptrdiff_t useage.  see: http://www.cegui.org.uk/phpBB2/viewtopic.php?f=3&t=5546
FIX: include of cstddef header was missing for ptrdiff_t useage.  see: http://www.cegui.org.uk/phpBB2/viewtopic.php?f=3&t=5546

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