This way it works better when many packets are sended. Without
NODELAY, OSCAM sometimes gets packets boundaries wrong especially
when there are lots of packets (test with emm stream of 16000+
packets per minute).

Without this the STOP event was lost most of the times because
tsdecrypt exited before the thread delivered the event.

This prevents unnececary warnings. Sometimes OSCAM responds with error
and on the next query everything is OK. So before raising errors flags
try a couple of times.

This fix prevents segfault on exit.

Use different queues for ECMs and EMMs. This allows to process
ECMs before EMMs, preventing the case where too much incoming
EMMs slow down ECM processing and interfere with getting the code
words on time.

With this fix ORF1 Cryptoworks stream with CAID (0x0d95)
should work.

On high bitrate channels (> 11 Mbit/s) I have seen failures
related to decode buffer size so increase them.

This fixes Sky Italia HD channels. When they send new
code word the one that is about to expire is set to 0
and this causes short decryption failures. Now if code
word is all zeroes it is not set.