Changelog for s6-rc.

In 0.4.0.0
----------

 - s6-rc-compile now accepts several producers in a consumer-for file.
All the producers for a service will write to the same pipe. In other
words: pipelines are now funnels.
 - The pipeline-name file, defining the name of a bundle containing
all the services in a pipeline, must now be place in the definition
directory of the last consumer in the pipeline, instead of the definition
directory of the first producer (since the latter is not unique
anymore).
 - All service databases must be edited and recompiled.
 - New tool: s6-rc-format-upgrade, to handle the upgrade to the new
compiled format.


In 0.3.0.0
----------

 - s6-rc-init now takes a -p option that adds a prefix to the symbolic links
created in the scandir to manage longruns. This allows the user to use the
same scandir for several s6-rc databases and live directories without risking
conflicts, if the prefixes are unique enough.
 - s6-rc-update does not use random number generation anymore, so it does
not block at boot time.
 - Bugfixes.

 Despite this being a major version release, the compiled service databases
did not change formats; you do not need to recompile your service databases.


In 0.2.1.2
----------

 - Bugfix release.
 - s6-rc's verbosity has been adjusted. (-v2 is less verbose, -v3 is
what the previous -v2 was, -v4 is still extremely verbose.)


In 0.2.1.1
----------

 - Bugfix release.


In 0.2.1.0
----------

 - Timeouts for oneshots have been increased to 30 seconds.
 - s6-rc now sends an explicit "s6-svc -d" to a longrun when an
up transition fails.
 - s6-rc now kills subprocesses waiting on longrun transitions
when it receives a SIGINT or a SIGTERM.
   + Those two changes combined ensure that a user can interrupt
a transition that is blocked in a "service is not-ready" limbo, and
bring back the service to a known "down" state.


In 0.2.0.1
----------

 - Bugfix release.
 - Support for timeout-kill (in s6-2.5.1.0).


In 0.2.0.0
----------

 - Added this NEWS file. :)
 - Major types overhaul to make them more POSIXly correct:
compatibility with skalibs-2.5.0.0.
 - s6-2.5.0.0 now allows longruns to report permanent failures
(when ./finish exits 125). s6-rc should pick that up automatically
and fail a longrun transition when it's the case.
 - s6-rc commands taking a lock on the live directory or the service
database now fail instantly if they're already locked. A -b option
has been added to give them the "block and wait for the lock to be
released" behaviour back.
 - Easier external interaction with the hidden s6rc-fdholder
service: the list of pipes to autofill a new fdholder with is now
taken from the data/autofilled file (previously: was a hardcoded
command line in the s6rc-fdholder run script).