Clang: use local renaming based on ClangCodeModel

Provide refactoring engine for ClangCodeModel and
implement missing methods.

Change-Id: If5c913e0c5a7941cd2ced54d0fcfa4d625eadc93
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/tools/clangbackend/source/clangcodemodelserver.cpp

@@ -261,6 +261,7 @@ void ClangCodeModelServer::requestReferences(const RequestReferencesMessage &mes
 
         JobRequest jobRequest = processor.createJobRequest(JobRequest::Type::RequestReferences);
         fillJobRequest(jobRequest, message);
+        jobRequest.localReferences = message.local();
         processor.addJob(jobRequest);
         processor.process();
     }  catch (const std::exception &exception) {