[DNM] Always remark on indexing system modules

Author: xymus

lib/Index/IndexRecord.cpp

@@ -530,7 +530,7 @@ emitDataForSwiftSerializedModule(ModuleDecl *module,
     }
   }
 
-  if (module->getASTContext().LangOpts.EnableIndexingSystemModuleRemarks) {
+  if (true) {
     diags.diagnose(SourceLoc(),
                    diag::remark_indexing_system_module,
                    filename, skipIndexingModule);