Update implementation of Version in nuxeo-distribution-tools

The Version class is used to compare JAR files. The same rules are needed for Marketplace packages and assemblies.

org.nuxeo.build.ant.Version (from nuxeo-distribution-tools) is not up-to-date compared to org.nuxeo.connect.update.Version (from nuxeo-connect-client).

Either comment both files to warn about sync need, either simply make nuxeo-distribution-tools depends on nuxeo-connect-client.