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.

This is in preparation for adding --ecm-only and -ecm-and-emm-only
options.

This patch adds support for connecting to CAMD over IPv6. Nice addition
is that now tsdecrypt tries each of the addresses returned when CAMD
hostname is resolved and connects to the one that works. Resolving
of the server address is done before each connect, which allows for
uninterupted migration of CAMD servers by just changing their DNS
record.

IPv6 functionality can be disabled by using -4/--ipv4 options or
if you fancy only IPv6 servers -6/--ipv6 can be used.

This time free the memory returned by crypt() only once. This way
the leak is avoided and also double free error is avoided also.
The patch fixes the following valgrind compaint:

 43 bytes in 1 blocks are still reachable in loss record 1 of 1
    at 0x4026844: malloc (vg_replace_malloc.c:263)
    by 0x40268BE: realloc (vg_replace_malloc.c:632)
    by 0x41EE411: __md5_crypt (in /lib/libcrypt-2.13.so)
    by 0x41EDA56: crypt (in /lib/libcrypt-2.13.so)
    by 0x805F702: newcamd_login (camd-newcamd.c:297)
    by 0x9F0B10: ???

When the input is MPTS and output filtering is enabled, rewrite output
PAT to include only the single program that is decoded.

This workaround is no longer needed because camd socket is now set
TCP_NODELAY and this fixes OSCAM communication.

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

Add --cw-warn-time to set how much time to wait before
starting to complain about code words.

This move is in preparation for adding ecm reports.

With this patch Bulsatcom irdeto ECM stream can be used
for decoding.