Merge branch 'Removed_QT4_ifdefs' into 'master'

BasePlugin/AboutInfoInterface.hh

BasePlugin/BackupInterface.hh

BasePlugin/ContextMenuInterface.hh

BasePlugin/INIInterface.hh

BasePlugin/KeyInterface.hh

BasePlugin/MenuInterface.hh

BasePlugin/MetadataInterface.hh

BasePlugin/MouseInterface.hh

BasePlugin/OptionsInterface.hh

BasePlugin/PickingInterface.hh

BasePlugin/ProcessInterface.hh

BasePlugin/SecurityInterface.hh

BasePlugin/SelectionInterface.hh

BasePlugin/StatusbarInterface.hh

BasePlugin/TextureInterface.hh

BasePlugin/ToolbarInterface.hh

BasePlugin/ToolboxInterface.hh

BasePlugin/ViewInterface.hh

BasePlugin/ViewModeInterface.hh

Core/Core.cc