Compile without Qt4 support

CMakeLists.txt

src/accountmodel.cpp

src/accountmodel.h

src/accountstatusmodel.cpp

src/accountstatusmodel.h

src/audio/alsapluginmodel.cpp

src/audio/alsapluginmodel.h

src/audio/codecmodel.cpp

src/audio/codecmodel.h

src/audio/inputdevicemodel.cpp

src/audio/inputdevicemodel.h

src/audio/managermodel.cpp

src/audio/managermodel.h

src/audio/outputdevicemodel.cpp

src/audio/outputdevicemodel.h

src/audio/ringtonedevicemodel.cpp

src/audio/ringtonedevicemodel.h

src/bookmarkmodel.cpp

src/bookmarkmodel.h

src/callmodel.cpp