use rsync for downloading blockchain.
use rsync for downloading blockchain.

BWallet/obelisk,tuomassiren/libbitcoin-server,tuomassiren/libbitcoin-server,tuomassiren/libbitcoin-server,BWallet/obelisk,tuomassiren/obelisk,RojavaCrypto/libbitcoin-server,BWallet/obelisk,tuomassiren/obelisk,libmetrocoin/libmetrocoin-server,RojavaCrypto/libbitcoin-server,RojavaCrypto/libbitcoin-server,libmetrocoin/libmetrocoin-server,tuomassiren/obelisk,libmetrocoin/libmetrocoin-server