* workaround hanging Read() if frontend loses and regains lock
* set DMX_ONESHOT for TDT and TOT sections
(this is the same as commit fe7b385660 for spark)
TODO: some code is very similar to SPARK (record and pwrmngr
are just symlinked, dmx is almost identical). Reduce duplication
by factoring out DVBAPI code into an extra directory.
* what works: audio, video, demux
* what probably doesn't work or is untested: record
* what very likely doesn't work: playback
Playback is just copied over from aztrino and made to compile.
If you are lucky, it just segfaults :-)
