added operator== to Variant
made image property combobox more robust when selecting values that are not in the list of possible values anymore
simplified comparing which shooting mode is used, in standard photo mode
removed warning about not using /LTCG
added text for camera info dialog when shooting mode list is empty
fixed mapping shooting mode types to shooting mode values, for PS-REC; uses UInt8, not UInt16
added more property value descriptions (and fixed some), for PS-REC