Update libbitcoin VS import props.
Enable testnet on osx/static build.Accomodate
Whitespace.
Remove dead comments.
Accomodate obsoletion of bc::initiate_stealth.
Incorporate bc::endorsement and enforce length constraint.
Disable mainnet-only tests in ENABLE_TESTNET builds.
Merge pull request #182 from evoskuil/version2

Prevent test fails with testnet builds, build testnet in Travis.