With this commit if tsdecrypt detects that the stream is still
encrypted after passing it through decryption it doesn't output it.

You can enable the output of encrypted streams using --output-enc-pass
option.

Reported by: malakudi

This allows tsdecrypt to automatically do the right thing
without having to use --ecm-pid option.

Tested on swiss viaccess encrypted streams.

Enable reproducible building by dropping build date from version string

Fix camd message len

Fixes problems with providers that use quite long ECMs/EMMs.

Store message len in int instead of uint8_t to fix transmission of msgs
longer than 255 bytes (size_t was not an option as some functions return
negative values).

Add msg len check to cs378x as it only allows up to 256 bytes data.

Without this fix "CODE_WORD_OK" message was not sent.

Using it prevents running of several notification scripts in parallel
which can lead to races if the scripts are used for logging.

Use openssl headers provided by MacPorts (installed with `port install openssl`)
since OS X no longer ships the headers.

Since r10358 oscam expects ECM pid to be send over the camd3 protocol.
This allows ECMs to be retransmitted over gbox.

This change adds support for sending ecm pid.

This removes tsdecrypt's error message in favour of getopt
native errors. Our message was always 'Unknown parameter'
which was not correct (most of the time) and very misleading.