Oscam 11508 with emu 794first part of the rework on dvbapi
to incrase the amount of descramblers
Get available descramblers in box and BISS2 related changes
Instead of using a predefined number of descramblers (16 until now), oscam now gets the exact number of available descramblers in box.
Skip cw checks for BISS2, similar to what is done for BISS1. BISS2 uses 16 byte cw, so some checks need to be skipped.
Cosmetic changes including code refactoring, variable renaming and comment addition to several places.