* modules/demux/ts.c: Parse the telx descriptor and create pseudo ES

 * modules/demux/ts.c: Parse the telx descriptor and create pseudo ES
   for different languages. Slightly changed the way the dvbsub parser
   works to allow correct streaming with --sout-all or --programs.
 * modules/mux/mpeg/ts.c: Changes to allow descriptor pass-through with
   telx and dvbsub. This is kind of kludgy.
 * module/codec/telx.c: Got rid of the ugly static variables and use
   info from the TS demux.