Added Muterator support to the Set template class, so that we have mutable iterators in addition to the preexisting const iterators.
Added Muterator support to the Set template class, so that we have mutable iterators in addition to the preexisting const iterators.

slideclick/vld,akaStiX/vld,smanders/vld,dmoulding/vld,dmoulding/vld,erdincay/vld,zcnet4/vld,erdincay/vld,zcnet4/vld,smanders/vld,akaStiX/vld,ioannis-e/vld,slideclick/vld,KindDragon/vld,KindDragon/vld,ioannis-e/vld