- Made package multi-archive aware. Numerous changes across most files. ...

- Fixed bug in inc.class.mysql.es.php that meant that eprint ID 1 could never
  be displayed.
- Fixed bug in inc.fns.merge.es.php that caused fractional years to be
  generated.

- Moved GeoIP to global include_path. ...

- Made generated files dependent on enrivonment_config.make.
- Completely rewrote code for detecting local IP ranges.

- Switched to slightly more streamlined sudo method to make life easier on ...

the deployment machine.

- Switched to machine-independent environment configuration.

- Added makefile. ...

- Removed redundant and duplicated files.
- Added database function to retrieve date stats were last generated, and
  included this in the header.
- Made styling consistent with otago_eprints.