"The documentation for mpd.conf still links to https://replaygain.org
– according to archive.org, this domain has been defunct since
2014-09-14, shortly after got domain squatted and ever since hosts
dubious content."

Closes https://github.com/MusicPlayerDaemon/MPD/issues/1050

"DEFAULT" is a bad name - all it says is that it's the default value,
but it doesn't say what it means.  The name NOTICE mimics the syslog
level.

This is useful in multiple mpd instances scenario, or multiple pulse outputs defined on the same mpd instance.
It is actually a more flexible way to route flows than the "sink" parameter, letting the PulseAudio routing do its job, but with the ability to isolate routing for each output.

If not specified, the role remains like it was before this commit, ie "music"

expand %h to the system hostname and default to a zeroconf string that
contains %h

With a "+" or "-" prefix, the "metadata_to_use" setting can manipulate
the existing default.  This way, one can enable `TAG_COMMENT` without
having to list all the other tags.

Remove another dependency on the config/Global library.

The user manual specifies "encoder", which is consistent with other
output plugins.  "encoding" should be deprecated.

A complete list which replaces the incomplete list in the mpd.conf
manpage.

Drop support for misencoded tags.  People should not be using ID3v1
anyway.

Just an attempt to prevent users from shooting themselves in the foot
by uncommenting these lines without knowing what they're doing.

2 MB was too small for cross-fading a 24 bit file.  Increasing to 4 MB
is still not too large for weak machines, but is enough for
cross-fading.

- Add mandatory "name" setting for winmm/openal examples.

- Fix the language in openal sample (a -> an)

- Added replaygain_missing_preamp and replaygain_limit settings

- Added information about "auto" replay gain mode

Additionally, update mpdconf.example to refer to mpd.conf(5) for the
complete list of tags instead of trying to repeat it.

When set, MPD will not auto-start playback on startup; it will be in
"paused" state.

Added a new optional parameter for the shout plugin called "url".

Added support for a new optional configuration setting for the httpd output
named "bind_to_address". Setting it to a specific IP address (v4 or v6) will
cause the httpd output to bind to that address exclusively. Supporting
multiple addresses in parallel is future work.

This implements the feature requests #2998 and #2646.

Limits the depth of the watched directories.  This is useful to keep
resource usage down and speed up MPD startup.

Signed-off-by: Romain Bignon <romain@peerfuse.org>