Closes: https://github.com/filecoin-project/lotus/issues/11679
* Introduce a `moved:"To.New.Config"` tag which prints a stderr warning when
you use one of these, but will move any set value to the new location if the
new location isn't already set itself.
* Look for `X is DEPRECATED` to hold certain fields back from documentation.
* Use `toml:"omitempty"` to prevent the default config output from having these
deprecated values.
Use BlockDelay as the window for receiving events on the SubscribeActorEvents
channel. We expect the user to have received the initial batch of historical
events (if any) in one block's time. For real-time events we expect them to
not fall behind by roughly one block's time.
The function/parameter were poorly named and should never have been
exposed. "GC" confidence should always be the same, this parameter
doesn't let us actually set the _confidence_, just the point before
which we no longer support reverts.
fixes#10706
