Added command line options to the install process to overwrite or
preserve the existing config files.
Added the pypo-start/stop and recorder-start/stop symlinks to /usr/bin.
Renamed pypo-start.py to airtime-pypo-start.
Renamed pypo-stop.py to airtime-pypo-stop.
Renamed recorder-start.py to airtime-show-recorder-start.
Renamed recorder-stop.py to airtime-show-recorder-stop.
Renamed testrecordscript.py to recorder.py