Fix and test send-tx.
Remove precompile.
update send-tx-node/p2p and tests.
Merge pull request #79 from evoskuil/develop

update send-tx-node/p2p and tests.
Reverse boolean on handle_error, update tests.
Merge pull request #81 from evoskuil/develop

Reverse boolean on handle_error, update tests.
Merge pull request #80 from libbitcoin/develop

update send-tx-node/p2p and tests.
Update libbitcoin_client dependency.
Change fetch-stealth client call (by passing bc::client::stealth_prefix instead of bc::stealth_prefix)
watch-address client-related changes; correction to generated src/test Makefile.am.