Fix dragging selections to icon bar icons
Fix for cut and paste - dragging selections to icon bar icons - when destination window is -2 add icon handle to Wimp_SendMessage to ensure correct destination for Message_Dragging and Message_DataSave.
Fix for cut and paste - dragging selections to icon bar icons - when destination window is -2 add icon handle to Wimp_SendMessage to ensure correct destination for Message_Dragging and Message_DataSave.