update swift runtime to workaround "struct" bug, issue 3646 (#3647)
update swift runtime to workaround "struct" bug, issue 3646 (#3647)


akrabat/openwhisk,openwhisk/openwhisk,RSulzmann/openwhisk,cbickel/openwhisk,akrabat/openwhisk,cbickel/openwhisk,RSulzmann/openwhisk,dubeejw/openwhisk,csantanapr/incubator-openwhisk,RSulzmann/openwhisk,starpit/openwhisk,markusthoemmes/openwhisk,openwhisk/openwhisk,RSulzmann/openwhisk,akrabat/openwhisk,style95/openwhisk,starpit/openwhisk,jeremiaswerner/openwhisk,jasonpet/openwhisk,jasonpet/openwhisk,cbickel/openwhisk,openwhisk/openwhisk,houshengbo/openwhisk,markusthoemmes/openwhisk,jasonpet/openwhisk,csantanapr/incubator-openwhisk,sven-lange-last/openwhisk,jeremiaswerner/openwhisk,houshengbo/openwhisk,style95/openwhisk,openwhisk/openwhisk,rabbah/openwhisk,markusthoemmes/openwhisk,jasonpet/openwhisk,csantanapr/incubator-openwhisk,style95/openwhisk,rabbah/openwhisk,akrabat/openwhisk,openwhisk/openwhisk,markusthoemmes/openwhisk,starpit/openwhisk,markusthoemmes/openwhisk,houshengbo/openwhisk,markusthoemmes/openwhisk,starpit/openwhisk,dubeejw/openwhisk,jeremiaswerner/openwhisk,akrabat/openwhisk,csantanapr/incubator-openwhisk,houshengbo/openwhisk,akrabat/openwhisk,houshengbo/openwhisk,jeremiaswerner/openwhisk,cbickel/openwhisk,jasonpet/openwhisk,akrabat/openwhisk,dubeejw/openwhisk,RSulzmann/openwhisk,rabbah/openwhisk,starpit/openwhisk,dubeejw/openwhisk,csantanapr/incubator-openwhisk,RSulzmann/openwhisk,style95/openwhisk,houshengbo/openwhisk,cbickel/openwhisk,dubeejw/openwhisk,RSulzmann/openwhisk,markusthoemmes/openwhisk,markusthoemmes/openwhisk,jeremiaswerner/openwhisk,csantanapr/incubator-openwhisk,style95/openwhisk,openwhisk/openwhisk,rabbah/openwhisk,jeremiaswerner/openwhisk,jeremiaswerner/openwhisk,style95/openwhisk,dubeejw/openwhisk,csantanapr/incubator-openwhisk,sven-lange-last/openwhisk,cbickel/openwhisk,sven-lange-last/openwhisk,rabbah/openwhisk,starpit/openwhisk,jasonpet/openwhisk,rabbah/openwhisk,cbickel/openwhisk,style95/openwhisk,sven-lange-last/openwhisk,sven-lange-last/openwhisk,rabbah/openwhisk,houshengbo/openwhisk,sven-lange-last/openwhisk,sven-lange-last/openwhisk,jasonpet/openwhisk