Index package FqNames for files

compiler/frontend/src/org/jetbrains/jet/lang/psi/stubs/elements/JetFileElementType.java

@@ -82,6 +82,6 @@ public class JetFileElementType extends IStubFileElementType<PsiJetFileStub> {
 
     @Override
     public void indexStub(final PsiJetFileStub stub, final IndexSink sink) {
-        // Don't index file
+        StubIndexServiceFactory.getInstance().indexFile(stub, sink);
     }
 }

compiler/frontend/src/org/jetbrains/jet/lang/psi/stubs/elements/StubIndexService.java

@@ -25,6 +25,10 @@ public interface StubIndexService {
      * Default implementation with no indexing.
      */
     StubIndexService NO_INDEX_SERVICE = new StubIndexService() {
+        @Override
+        public void indexFile(PsiJetFileStub stub, IndexSink sink) {
+        }
+
         @Override
         public void indexClass(PsiJetClassStub stub, IndexSink sink) {
         }
@@ -46,6 +50,7 @@ public interface StubIndexService {
         }
     };
 
+    void indexFile(PsiJetFileStub stub, IndexSink sink);
     void indexClass(PsiJetClassStub stub, IndexSink sink);
     void indexFunction(PsiJetFunctionStub stub, IndexSink sink);
     void indexObject(PsiJetObjectStub stub, IndexSink sink);