Add a osx release target to the makefile to ease releasing.
Add a osx release target to the makefile to ease releasing.

Signed-off-by: Jean-Laurent de Morlhon <b39fc94b663d6be34c4c0f177d2094ce0e8da3b3@morlhon.net>

docker/docker-credential-helpers,docker/docker-credential-helpers,docker/docker-credential-helpers