Bug fix: Was referring to wrong self.
Need to support keyword arguments here.
Replacing simple, old serial code with calls to these threaded dialogs. Tested
OK.
This is the other way to cause a query for releases; replacing code with creation of threads.
One more dialog converted to threaded code. Also respecting the results limit.
This was the last place to link in the PulseDialog. Not sure the logic for deleting the parent barcode entry window when releases are found. Maybe it should remain until the user closes it.