I've created a new library which will have non-critical code (like
deterministic wallets, key formats and selecting outputs) ported from
libbitcoin to libwallet.

This will keep libbitcoin focused on its core functionality. The client
side stuff is less important considering all the wallet development done
in Python, JavaScript .etc libbitcoin is aimed at server software.

https://github.com/spesmilo/libwallet

The install-sx.sh has been updated to reflect this. Users simply need to
re-run the script to update.