stv0900-scan out of beta

stv0900-scan is out of beta, its still a big work in progress but it has enough features that work that I think we can take it out of beta.

See anything not working let me know and I'll do my best to get it working. Take notice the new patch too, it implements the NOTUNE search_algo as well so that when your looping the spectrum_scan the card isnt also trying to lock a moving signal.

UDL