Install bitcoin-wallet manpage.
Install bitcoin-wallet manpage.

This change marks the already-existing bitcoin-wallet.1 manpage file for
installation together with the others.  Previously, only bitcoind.1,
bitcoin-cli.1, bitcoin-tx.1 and bitcoin-qt.1 would be installed.


Former-commit-id: 051c26e1fc9f13e245851361e9f63736f3a5bb95
syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin