0002960: Add reference to file back to staged resource because we no

longer keep so many instances in memory.

symmetric-io/src/main/java/org/jumpmind/symmetric/io/stage/StagedResource.java

@@ -168,6 +168,7 @@ public void setState(State state) {
         }
         refreshLastUpdateTime();
         this.state = state;
+        this.file = buildFile(state);
     }
 
     public synchronized BufferedReader getReader() {