为pappradio SDR控制软件

Unlike most other software available for the Pappradio, which most often is available for Windows, only, this one is primarily intended to supply a nice control-software for the Pappradio-SDR for Linux. This project was formerly included in the libpappradio-repository. Because of the fact, that Google-Code does not allow to have a project containing a sub-project with a different license, the control-software was split apart from the library. Libpappradio is used as a git submodule from within this project. So if you try to build it, do not forget to do a git submodule init and update...