Restore compound file due Jenkins issues

Change-Id: I40a42c60dd40472af00774c57cdc5555889257b2
Signed-off-by: Dawid Pakuła <zulus@w3des.net>
diff --git a/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java b/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java
index 5d920e8..ef75f21 100644
--- a/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java
+++ b/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java
@@ -132,7 +132,7 @@
 		Directory indexDir = FSDirectory.open(path);
 		purgeLocks(path);
 		IndexWriterConfig config = new IndexWriterConfig(new SimpleAnalyzer());
-		config.setUseCompoundFile(false);
+		config.setUseCompoundFile(true);
 		ConcurrentMergeScheduler mergeScheduler = new ConcurrentMergeScheduler();
 		mergeScheduler.setDefaultMaxMergesAndThreads(true);
 		config.setMergeScheduler(mergeScheduler);