Support materialization of Maven artifacts (component/module name escaping)
When moving from experiment to solution, it would be desirable to have the ability to move artifact dependencies into another repository as classical Z2 modules.
However, the naming format for maven artifacts (notably the ":") does not translate well to Z2's file system layout, at least under Windows.
- allow module name definition in a module-level z.properties
- translate ":" to path-separator
- treate ":" equivalent to "~" when running on Windows