Accomodate stealth functions moved to wallet namespace.
Accomodate stealth functions moved to wallet namespace.

tuomassiren/libbitcoin-server,tuomassiren/libbitcoin-server,RojavaCrypto/libbitcoin-server,tuomassiren/libbitcoin-server,RojavaCrypto/libbitcoin-server,RojavaCrypto/libbitcoin-server