[PATCH] DVB: Other DVB core updates

[PATCH] DVB: Other DVB core updates

 - [DVB] remove superflous memset() which caused section data to be
   overwritten when a) there are two sections in one TS packet, and b)
   the first section was smaller than 18 bytes; thanks to Jean-Claude
   Repetto for tracking this down
 - [DVB] starting a ts filter on a running section filter's pid did
   break the section filter; fixed.
 - [DVB] integrate ULE Decapsulation code, thanks to gcs - Global
   Communication & Services GmbH.  and Institute for Computer Sciences
   Salzburg University.  Hilmar Linder <hlinder@cosy.sbg.ac.at> and
   Wolfram Stering <wstering@cosy.sbg.ac.at>
 - [DVB] fix the module use count bugs, thanks to Hernan A.Perez Masci
   for his initial work on this problem
 - [DVB] if dvb_frontend_internal_ioctl() returns an error code, be sure
   to deliver it to the calling application, don't ignore it (fixes the
   bug that the frontend0 doesn't respond properly to unknown ioctls...)
 - [DVB] major frontend code clean up, rewritten core tuning loop.
   Thanks to Andrew de Quincey.
 - [DVB] follow changes in dvb-core in skystar2, dvb-bt8xx