[Java] Add compaction style to options

Summary:
Add compression type to options

make rocksdbjava
make sample

Reviewers: haobo, yhchiang, sdong, dhruba, rsumbaly, zzbennett, swapnilghike
Reviewed By: yhchiang, sdong
CC: leveldb

Differential Revision: https://reviews.facebook.net/D20463

java/org/rocksdb/test/StatisticsCollectorTest.java

@@ -33,7 +33,7 @@ public class StatisticsCollectorTest {
     assert(callback.tickerCallbackCount > 0);
     assert(callback.histCallbackCount > 0);
 
-    statsCollector.shutDown();
+    statsCollector.shutDown(1000);
 
     db.close();
     opt.dispose();