Update makemessages.py

Fixed lack of messages and lack of file to track root cause.
You should understand if you compare both messages. Errors is not enough to solve problems with blocktrans for example but not only in this case.

What is currently done shows that there error and make people angry because is not show where is it and there not data to solve it.

You should genetate error with blocktrans and try to solve it with current tool to see what I am talking. It is the most lazy method I think to solve it and understand.