Check for zlib in configure.
Check for zlib in configure.

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