Elastos Node for Ubuntu v1.2.3

Update with:

node.sh update_script
node.sh version          # expect v1.2.3

Fixed

• ela rewound rejected every build after v1.0.0. The binary check matched the version string exactly, so a node correctly running v1.0.2 was told it could not perform the recovery and never reported READY. Point releases after the recovery build are the normal case once the chain is running again.

  The check now accepts v1.0.0 or later, compared as version numbers rather than as strings. A string compare is wrong in both directions: 1.0.2 sorts below 1.0.0, 0.9.9.6 sorts above it, and 1.10.0 sorts below 1.9.0. A prerelease build is accepted but reported as one.