added utility proc 'copy' in lib-clay/operators/.
added utility proc 'copy' in lib-clay/operators/.

mario-campos/clay,aep/clay,jckarter/clay,jckarter/clay,aep/clay,jckarter/clay,jckarter/clay,iamrekcah/clay,jckarter/clay,iamrekcah/clay,iamrekcah/clay,aep/clay,jckarter/clay,iamrekcah/clay,aep/clay,aep/clay,mario-campos/clay,mario-campos/clay,mario-campos/clay,iamrekcah/clay,mario-campos/clay,aep/clay