SWIG bindings: use longs instead of ints to store opaque pointers.
SWIG bindings: use longs instead of ints to store opaque pointers.

Was crashing on 64-bit systems.

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