[Java] Add Java bindings for 30 options for rocksdb::DBOptions.

Summary:
1. Add Java bindings for 30 options for rocksdb::DBOptions.
2. Add org.rocksdb.test.OptionsTest
3. Codes are semi-auto generated, JavaDocs are manually polished.

Test Plan:
make rocksdbjava
make jtest

Reviewers: haobo, ankgup87, sdong, dhruba

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D18015

java/org/rocksdb/test/OptionsTest.java

@@ -0,0 +1,201 @@
+// Copyright (c) 2014, Facebook, Inc.  All rights reserved.
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree. An additional grant
+// of patent rights can be found in the PATENTS file in the same directory.
+
+package org.rocksdb.test;
+
+import java.util.Random;
+import org.rocksdb.Options;
+
+public class OptionsTest {
+  static {
+    System.loadLibrary("rocksdbjni");
+  }
+  public static void main(String[] args) {
+    Options opt = new Options();
+    Random rand = new Random();
+    { // CreateIfMissing test
+      boolean boolValue = rand.nextBoolean();
+      opt.setCreateIfMissing(boolValue);
+      assert(opt.createIfMissing() == boolValue);
+    }
+
+    { // ErrorIfExists test
+      boolean boolValue = rand.nextBoolean();
+      opt.setErrorIfExists(boolValue);
+      assert(opt.errorIfExists() == boolValue);
+    }
+
+    { // ParanoidChecks test
+      boolean boolValue = rand.nextBoolean();
+      opt.setParanoidChecks(boolValue);
+      assert(opt.paranoidChecks() == boolValue);
+    }
+
+    { // MaxOpenFiles test
+      int intValue = rand.nextInt();
+      opt.setMaxOpenFiles(intValue);
+      assert(opt.maxOpenFiles() == intValue);
+    }
+
+    { // DisableDataSync test
+      boolean boolValue = rand.nextBoolean();
+      opt.setDisableDataSync(boolValue);
+      assert(opt.disableDataSync() == boolValue);
+    }
+
+    { // UseFsync test
+      boolean boolValue = rand.nextBoolean();
+      opt.setUseFsync(boolValue);
+      assert(opt.useFsync() == boolValue);
+    }
+
+    { // DbStatsLogInterval test
+      int intValue = rand.nextInt();
+      opt.setDbStatsLogInterval(intValue);
+      assert(opt.dbStatsLogInterval() == intValue);
+    }
+
+    { // DbLogDir test
+      String str = "path/to/DbLogDir";
+      opt.setDbLogDir(str);
+      assert(opt.dbLogDir().equals(str));
+    }
+
+    { // WalDir test
+      String str = "path/to/WalDir";
+      opt.setWalDir(str);
+      assert(opt.walDir().equals(str));
+    }
+
+    { // DeleteObsoleteFilesPeriodMicros test
+      long longValue = rand.nextLong();
+      opt.setDeleteObsoleteFilesPeriodMicros(longValue);
+      assert(opt.deleteObsoleteFilesPeriodMicros() == longValue);
+    }
+
+    { // MaxBackgroundCompactions test
+      int intValue = rand.nextInt();
+      opt.setMaxBackgroundCompactions(intValue);
+      assert(opt.maxBackgroundCompactions() == intValue);
+    }
+
+    { // MaxBackgroundFlushes test
+      int intValue = rand.nextInt();
+      opt.setMaxBackgroundFlushes(intValue);
+      assert(opt.maxBackgroundFlushes() == intValue);
+    }
+
+    { // MaxLogFileSize test
+      long longValue = rand.nextLong();
+      opt.setMaxLogFileSize(longValue);
+      assert(opt.maxLogFileSize() == longValue);
+    }
+
+    { // LogFileTimeToRoll test
+      long longValue = rand.nextLong();
+      opt.setLogFileTimeToRoll(longValue);
+      assert(opt.logFileTimeToRoll() == longValue);
+    }
+
+    { // KeepLogFileNum test
+      long longValue = rand.nextLong();
+      opt.setKeepLogFileNum(longValue);
+      assert(opt.keepLogFileNum() == longValue);
+    }
+
+    { // MaxManifestFileSize test
+      long longValue = rand.nextLong();
+      opt.setMaxManifestFileSize(longValue);
+      assert(opt.maxManifestFileSize() == longValue);
+    }
+
+    { // TableCacheNumshardbits test
+      int intValue = rand.nextInt();
+      opt.setTableCacheNumshardbits(intValue);
+      assert(opt.tableCacheNumshardbits() == intValue);
+    }
+
+    { // TableCacheRemoveScanCountLimit test
+      int intValue = rand.nextInt();
+      opt.setTableCacheRemoveScanCountLimit(intValue);
+      assert(opt.tableCacheRemoveScanCountLimit() == intValue);
+    }
+
+    { // WALTtlSeconds test
+      long longValue = rand.nextLong();
+      opt.setWALTtlSeconds(longValue);
+      assert(opt.walTtlSeconds() == longValue);
+    }
+
+    { // ManifestPreallocationSize test
+      long longValue = rand.nextLong();
+      opt.setManifestPreallocationSize(longValue);
+      assert(opt.manifestPreallocationSize() == longValue);
+    }
+
+    { // AllowOsBuffer test
+      boolean boolValue = rand.nextBoolean();
+      opt.setAllowOsBuffer(boolValue);
+      assert(opt.allowOsBuffer() == boolValue);
+    }
+
+    { // AllowMmapReads test
+      boolean boolValue = rand.nextBoolean();
+      opt.setAllowMmapReads(boolValue);
+      assert(opt.allowMmapReads() == boolValue);
+    }
+
+    { // AllowMmapWrites test
+      boolean boolValue = rand.nextBoolean();
+      opt.setAllowMmapWrites(boolValue);
+      assert(opt.allowMmapWrites() == boolValue);
+    }
+
+    { // IsFdCloseOnExec test
+      boolean boolValue = rand.nextBoolean();
+      opt.setIsFdCloseOnExec(boolValue);
+      assert(opt.isFdCloseOnExec() == boolValue);
+    }
+
+    { // SkipLogErrorOnRecovery test
+      boolean boolValue = rand.nextBoolean();
+      opt.setSkipLogErrorOnRecovery(boolValue);
+      assert(opt.skipLogErrorOnRecovery() == boolValue);
+    }
+
+    { // StatsDumpPeriodSec test
+      int intValue = rand.nextInt();
+      opt.setStatsDumpPeriodSec(intValue);
+      assert(opt.statsDumpPeriodSec() == intValue);
+    }
+
+    { // AdviseRandomOnOpen test
+      boolean boolValue = rand.nextBoolean();
+      opt.setAdviseRandomOnOpen(boolValue);
+      assert(opt.adviseRandomOnOpen() == boolValue);
+    }
+
+    { // UseAdaptiveMutex test
+      boolean boolValue = rand.nextBoolean();
+      opt.setUseAdaptiveMutex(boolValue);
+      assert(opt.useAdaptiveMutex() == boolValue);
+    }
+
+    { // BytesPerSync test
+      long longValue = rand.nextLong();
+      opt.setBytesPerSync(longValue);
+      assert(opt.bytesPerSync() == longValue);
+    }
+
+    { // AllowThreadLocal test
+      boolean boolValue = rand.nextBoolean();
+      opt.setAllowThreadLocal(boolValue);
+      assert(opt.allowThreadLocal() == boolValue);
+    }
+
+    opt.dispose();
+    System.out.println("Passed OptionsTest");
+  }
+}