message: [TX2XLA] Add function name when reporting signature check failure.
diff: @@ -177,7 +177,9 @@ Status XlaCompiler::CompileFunction(
  const FunctionBody* fbody;
  TF_RETURN_IF_ERROR(FindFunctionBody(function, &fbody));
  - TF_RETURN_IF_ERROR(CheckSignature(fbody->arg_types, args));
  + TF_RETURN_WITH_CONTEXT_IF_ERROR(
  + CheckSignature(fbody->arg_types, args),
  + "Signature check failure while compiling: ", function.name());
  std::unique_ptr<Graph> graph(new Graph(options_.flib_def));
  CopyGraph(*fbody->graph, graph.get());
  