[mythtv] DVB Code Update

[Ben Bucksch]

Ben Bucksch wrote:

> only use the verbatim transform.h and co from mpegtools.

BTW: Isaac, do you know offhand, if there's a TS to PS transformation 
function in avformat? IIRC, I saw something like that, but there must 
have been a reason why I didn't use it. If there's an appropriate 
function in avformat already, we could maybe use that and get rid of 
libdevdvb completely.