Fix a mismerge in the EIT software descrambling patch.

Signed-off-by: Brice DUBOST <mumudvb@braice.net>
Fix a crash during thread shutdown.

Signed-off-by: Brice DUBOST <mumudvb@braice.net>
Make SCAM send scrambled packets, too.

This brings it much more in line with what the regular CAM function does,
and makes it possible to use SCAM support with STBs that decrypt in hardware
(ie., where OSCam gives the CW directly to the hardware).

Signed-off-by: Brice DUBOST <mumudvb@braice.net>