Correct stop of a node via a KILL (SIGINT, SIGTERM, etc) signal

See merge request !37

[+] New obj dap_events_socket_w_data_t for data/ptr/value transfer for kqueue() events (and possible not only)
[!] Timer events now has less accuracy but more power-safe (important for iOS builds)

[*] Config scripts

[*] Removed useless length variability for wallet struct

[+] Close sqlite3 on exit

[+] Extended cli cmd 'net'

[+] Notify server

[+] BSD detection for cmake build files
[!] Rised CMake minimal required version to 3.0

[!] Fixed node info update, now it updates with own addresses and ports

[!] Fixed crash in ledger treshold
[+] Added treshold processing in sync protocol

[*] Fix in timeouts for reconnection attempts

[*] Some fixes with root role behavior