Added shared-device check to testmany; also fail test if device ordinal collisions occur.
Added shared-device check to testmany; also fail test if device ordinal collisions occur.

libmapper/libmapper,libmapper/libmapper,malloch/libmapper,libmapper/libmapper,malloch/libmapper,radarsat1/libmapper,libmapper/libmapper,radarsat1/libmapper,malloch/libmapper,radarsat1/libmapper,libmapper/libmapper,malloch/libmapper,malloch/libmapper,radarsat1/libmapper,malloch/libmapper,libmapper/libmapper,radarsat1/libmapper