DVB USB FRAMEWORK ENHANCEMENTS.

DVB USB framework contains general routines used by almost every USB digital television devices. Individual DVB USB device uses framework services by implementing callbacks and variables that framework then uses. Current structure contains too much static data and it causes many problems as new devices are too dynamic. Update it to fit need of new "dynamic" devices.

DVB CORE FRONTEND ENHANCEMENTS.

DVB frontend is logical entity representing digital television device to user-space. Currently individual device driver does lot of parameter valid checks. Those checks are rather similar from device to device as television standards sets very clear requirements and limits. Implement parameter checks against used standards inside DVB frontend leaving less job for individual device drivers.