[mythtvnz] Software LNB alignment aid

[Austin]

My recent problems with TeVii S421 cards only tuning one transponder was fixed 
by installing a new LNB. The S421 seems to be quite sensitive to slight 
misalignments of the dish or LNB skew, so I wrote a Python program that 
displays the monitor output from dvbtune as bar graphs plus status indicators. 
The dvbtune output is piped over the wireless LAN to a netbook, where the 
Python program displays the result. I can then hold and view the netbook while 
perched up a ladder adjusting my dish. If anyone thinks they might benefit from 
it, I'll post it up somewhere. It needs a minor patch to dvbtune, so you have 
to install the source for that too.