2008/015 svccfg refresh subcommand

[Nicolas Williams]

I like the refresh/restart split.

Refresh implies that running service state/config can be updated without
disruption.  Restart implies that processes will exit/be killed and be
restarted.  The distinction makes a difference in terms of reliability.

We should strive to provide useful refresh methods so that restarts can
be avoided.

But we must provide start/stop (and, therefore, restart) methods.

Nico
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