message: Fix for clang interface update
  FunctionProtoType.TypeQuals is now a Qualifiers object instead of an
  integer.
  The related clang commit: r349019
diff: @@ -2205,7 +2205,7 @@ CompilerType ClangASTContext::CreateFunctionType(
  proto_info.ExtInfo = cc;
  proto_info.Variadic = is_variadic;
  proto_info.ExceptionSpec = EST_None;
  - proto_info.TypeQuals = type_quals;
  + proto_info.TypeQuals = clang::Qualifiers::fromFastMask(type_quals);
  proto_info.RefQualifier = RQ_None;
  return CompilerType(ast,
  