tcp: don't crash when tcp server cannot be registered, fixes #2315
channel: fix channel_find_by_number for maj.min support, fixes #2321
descrambler: remove the extra (not required) condition < 0 for uint16_t
linuxdvb: fix the USALS grace calculation
linuxdvb: rotor - add Max Rotor Movement field to the frontend config
Revert "linuxdvb: rotor - add Max Rotor Movement field to the frontend config"

This reverts commit aaedddc7e05e54af12e1c543bc32ebc4b8b2622c.
linuxdvb: rotor - add Max Rotor Movement field to the frontend config #2
two genre maps for opentv sky-it/ausat imported from "EPG Collector" project

I've personally verified the sky-it one; the other one should work too.