[mythtv] scanned air2pc channels -> datadirect listing channels

[Chris Petersen]

I think I fixed it.  Had a couple of fields out of order, and was 
missing a couple of updates.

If anyone wants to try it:

http://forevermore.net/files/mythtv_misc/hdtvscan2dd.pl.txt

Remember, do so at your own risk -- back up your database first, and 
don't come crying to me if it breaks things (do, however, let me know if 
something goes wrong, so I can fix it).  The script as it stands now 
will run with no output if it's successful (it's not done yet).

-Chris