Add header to jni makefile.
Add header to jni makefile.

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