added parsing "extra_env" as purely internal variables on which decisions can be made during resolve(), like it is done in packages
added parsing "extra_env" as purely internal variables on which decisions can be made during resolve(), like it is done in packages

ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env,ctuning/ck-env