File merging implemented

Discarding pointer to incorrectly opened device

Use real Pcap file for offline mode

Add file name field for offline mode
Modify PIXITs
Add WinMerge project for comparison with real LibIot

Small change in sdp_codets.cpp: inet_pton() not supported with WIN32 (mmagic). Need to be replaced by a similar function

Filtering updated (negative filter removed)

Add realistic PCAP network interfaces
Add realistic PCAP filtering sequence

Reply to the open device request modified (additional success code)

Add a Decoders helper for received TTCN-3 messages.
Charstring are encoded with the format <string length><string>.
Enumerated and Integer are encoded by default