Added support for Peaberry SDR v2 units

Added support for Peaberry SDR v2 units with the --peaberry argument. By default with no argument a standard Softrock configuration is used.
Merge pull request #26 from hammale/master

Added support for Peaberry SDR v2 units
updated dspserver and QtRadio to latest codec2-dev codec2_decode() prototype
Merge branch 'master' into opengl