the main GUI thread (thanks to G4WJS).
2.. Also, for the record, some example code for using QAudioInput instead
of PortAudio. This code is not presently active, and will need to be
changed to accommodate the changes in #1, above. But the basic ideas
are here...
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3509 ab8295b8-cf94-4d9e-aec4-7959e3be5d79