Fixed GafferImageUI linking on Mac.
Fixed GafferImageUI linking on Mac.

andrewkaufman/gaffer,johnhaddon/gaffer,boberfly/gaffer,andrewkaufman/gaffer,cedriclaunay/gaffer,cedriclaunay/gaffer,cedriclaunay/gaffer,GafferHQ/gaffer,paulondc/gaffer,appleseedhq/gaffer,ImageEngine/gaffer,paulondc/gaffer,boberfly/gaffer,boberfly/gaffer,davidsminor/gaffer,appleseedhq/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,hradec/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,hradec/gaffer,goddardl/gaffer,chippey/gaffer,ivanimanishi/gaffer,boberfly/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,GafferHQ/gaffer,davidsminor/gaffer,ImageEngine/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,goddardl/gaffer,GafferHQ/gaffer,ImageEngine/gaffer,lucienfostier/gaffer,hradec/gaffer,appleseedhq/gaffer,goddardl/gaffer,hradec/gaffer,chippey/gaffer,ImageEngine/gaffer,paulondc/gaffer,goddardl/gaffer,davidsminor/gaffer,chippey/gaffer,cedriclaunay/gaffer,davidsminor/gaffer,andrewkaufman/gaffer,chippey/gaffer,andrewkaufman/gaffer,ivanimanishi/gaffer,ivanimanishi/gaffer,johnhaddon/gaffer,hradec/gaffer,paulondc/gaffer,ivanimanishi/gaffer