patch https://code.google.com/p/qextserialport/source/browse/src/qextserialenumerator_p.h?spec=svn6dd548dc2de8defae39cd10342d313317cbde736&r=6dd548dc2de8defae39cd10342d313317cbde736
Issue 154: Fix compile error with MinGW

We don't support Windows 2000 any more

Works with WIN7 32bit (aae015)
can see reading tag from SerialPortMonitor
read epc