Add msig_set_instance_management_callback() to DLL export list.
Add msig_set_instance_management_callback() to DLL export list.

malloch/libmapper,libmapper/libmapper,davidhernon/libmapper-admin2,johnty/libmapper,davidhernon/libmapper,libmapper/libmapper,libmapper/libmapper,radarsat1/libmapper,johnty/libmapper,davidhernon/libmapper,libmapper/libmapper,johnty/libmapper,davidhernon/libmapper,malloch/libmapper,davidhernon/libmapper,malloch/libmapper,davidhernon/libmapper,libmapper/libmapper,radarsat1/libmapper,radarsat1/libmapper,johnty/libmapper,davidhernon/libmapper-admin2,radarsat1/libmapper,johnty/libmapper,davidhernon/libmapper-admin2,davidhernon/libmapper-admin2,libmapper/libmapper,davidhernon/libmapper-admin2,radarsat1/libmapper,malloch/libmapper,malloch/libmapper,malloch/libmapper