In #85 the voice context will be renamed to audio context, so the CValueObject classes will be renamed to namespace Audio too.
As #140 changes many CValueClasses, this crossover change is done in the same unit of work.
* added methods to get results in context
* added signal to indicate audio test completed
* updated GUI to display results
* changed test run methods to non-const to be consistent with voice lib
* Logic in GUI to avoid parallel / interfering tests
* Fixed wrong Q_ASSERT message and QTimer::singleShot in voice_vatlib.cpp
use the device information of this context. Sound shall be played on the
same computer as the voice.
* Adjusted .pro file
* Methods for SELCAL in context
* New XML file (DBus)
* changed the place where I can obtain the current in/output device
* to CCallsignList
* from QString to CCallsign
Added:
* Method to get users, and
* users for callsigns
Fixed some Doxygen comments along with the changes
