Most examples in the web are not correct! Writing a service is a lot
about understanding the state machines involved (between SCM, service
handler in the service and the operating system).

Most frameworks try to abstract too much and set values to defaults
they don't understand (for instance startup groups and order, service
dependencies).

We should try to get to a set of service functions as for the daemon.

The normal foreground mode in the console should also be possible
and act on events. Sadly there is no easy way to catch a ProcessTerminate
as it tears down all threads and the process. As long the service is
started in the console or by double-click in the explorer there is no
problem.

Good links:
- console_event_handling.txt: how to handle the events in foreground/
  console mode
- the Sphynx searchd.cpp (http://www.sphinxsearch.com/): especially
  service description, console events
- POCO (http://pocoproject.org/): on some design questions
- Microsoft Knowledge Base: best source as always
- ModuleDD.txt: good introduction to the history of Windows services
  and how they work