JNI bindings: delete global references created during add_input.
JNI bindings: delete global references created during add_input.

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