Merge branch 'stable-2.10'

* stable-2.10:
  Remove uneeded dependency in ChangesCollection
  Delete a change from the index when it is not in the DB

Change-Id: I02a4773dd581c29704a7cc45c5225258d657f836

gerrit-lucene/src/main/java/com/google/gerrit/lucene/QueryBuilder.java

@@ -56,6 +56,10 @@ public class QueryBuilder {
     return intTerm(ID_FIELD, cd.getId().get());
   }
 
+  public static Term idTerm(int id) {
+    return intTerm(ID_FIELD, id);
+  }
+
   private final Schema<ChangeData> schema;
   private final org.apache.lucene.util.QueryBuilder queryBuilder;