Method moveToBack

fdbserver/VersionedBTree.actor.cpp:1874–1877

Move an entry to the back of the eviction order if it is in the eviction order

		// Move an entry to the back of the eviction order if it is in the eviction order
		void moveToBack(Entry& e) {
			ASSERT(e.ownedByEvictor);
			evictionOrder.splice(evictionOrder.end(), evictionOrder, EvictionOrderT::s_iterator_to(e));
		}

		// Move entire contents of an external eviction order containing entries whose size is part of
		// this Evictor to the front of its eviction order.