Refactored BDB adapter class (KVStore) into its own package.

import com.google.protobuf.ByteString;

import com.seagate.kinetic.simulator.internal.KVStoreException;

import com.seagate.kinetic.simulator.persist.KVStore;

import com.seagate.kinetic.simulator.persist.KVValue;

import com.seagate.kinetic.simulator.persist.PersistOption;

import com.seagate.kinetic.simulator.persist.Store;

// or disclosure of this code, for any reason, not expressly authorized is

// prohibited. All other rights are expressly reserved by Seagate Technology, LLC.

package com.seagate.kinetic.simulator.persist;

package com.seagate.kinetic.simulator.persist.bdb;

import java.io.File;

import java.util.ArrayList;

import com.seagate.kinetic.simulator.internal.KVStoreNotFound;

import com.seagate.kinetic.simulator.internal.KVStoreVersionMismatch;

import com.seagate.kinetic.simulator.internal.SimulatorEngine;

import com.seagate.kinetic.simulator.persist.KVKey;

import com.seagate.kinetic.simulator.persist.KVValue;

import com.sleepycat.bind.EntryBinding;

import com.sleepycat.collections.StoredSortedMap;

import com.sleepycat.je.Database;