so we need to support:
- read only install
- setttings in the installation
- works with just the m2 executable in the path (no M2_HOME setting)
- possibility of a remote settings file for standalone installs, force a regular (daily) check when online to push updates
encourage:
- storing of install on a shared, read only drive
- possibly use a CVS checkout
- may want to integrate with existing deployment policies (eg an MSI that can be easily deployed)