- The default 'default' is None
- The default 'dest' is the option name, with - replaced with _
- The default 'action' is 'store'
Not coincidentally, these defaults are correct for most of our existing code.
(imported from commit 9c6078bd778324e08e1ca214a97281a7bdce08c2)
At least the zephyr.humbughq.com case is one our users might find
useful. I imagine we'll end up hiding --site once we integrate the
zephyr and main site tornado servers.
(imported from commit a3a28492cf3f32b78eab6bbd48ba66be2f38a5f2)
