Fixed PathFilterWidget for C++ PathFilters.
Fixed PathFilterWidget for C++ PathFilters.

PathFilter.userData() now returns a CompoundData rather than a dict, and `.value` must therefore be used to retrieve values from the members.

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