first fork commit

[+] signature TX item type , "Tx suffix" in CryptoNote transaction

[+] Declarations for chain operations
[+] Block cache
[+] Block dump
[*] Some internal fixes

[+] Wallet delcarations

[+] Transactions and transaction items
[*] Some renames mostly related to section

[+] HashFusion from brian.monahan@hpe.com (c) Copyright 2017 Hewlett Packard Enterprise Development LP
[+] wrapper for hash functions moved also from libdap/crypto

[+] Block's section format
[+] Block's section roots header

[+] Declarations