After we've been hit by Large File Support problems several times in
the past week (which only occur on 32 bit platforms, which I don't
have), this is yet another attempt to fix the issue.

Copy'n'paste error: call decoder_plugin_supports_mime_type() instead
of decoder_plugin_supports_suffix().

Export the decoder_plugins array.  The function
decoder_plugin_print_all_decoders() it is UI specific and should not
live in this backend library.

Remove the static integer hack, that's not thread safe and sucks.

A NULL terminated list is easier to iterate.

No CamelCase.  Use bool instead of int.  Make both arguments
mandatory.

Still missing:
- seeking
- tags
- streaming
- encodings other than MPG123_ENC_SIGNED_16

This updates the copyright header to all be the same, which is
pretty much an update of where to mail request for a copy of the GPL
and the years of the MPD project. This also puts all committers under
'The Music Player Project' umbrella. These entries should go
individually in the AUTHORS file, for consistancy.

Print the list of suffixes supported by each decoder, instead of
prining a list of all suffixes of all decoders with duplicates.

This plugin is based on "libmpcdec".

This plugin is based on "libmp4ff".

A decoder plugin should be named after the library which is used.

A decoder plugin should be named after the library which is used.

The "decoder" configuration block may contain the configuration of one
decoder plugin.

Preparing for per-plugin configuration sections in mpd.conf.

Increase code readability, always use the wrapper functions instead of
calling the plugin method pointers directly.

The decoder_plugin struct is used by both the MPD core and the decoder
plugin implementations.  Move it to a shared header file, to minimize
header dependencies.

There are a few problems left in this plugin:

- fluidsynth decodes in real time, while MPD prefers to buffer as
  quickly as possible; as a workaround, this plugin uses a timer
  object to synchronize with real-time playback

- I don't know yet how fluidsynth tells me when the song has ended

- the "soundfont" configuration setting is not yet documented, and it
  will likely change soon (in favor of a per-decoder configuration
  block)

We have two mod plugins now: modplug and mod.  Rename the latter to a
more useful name.

Renamed types, functions, variables.

Renamed functions and variables.

The "oggflac" plugin was enabled only if HAVE_FLAC_COMMON was
defined.  HAVE_FLAC_COMMON however is only an automake variable, and
is never available in decoder_list.c.  Make decoder_list.c depend on
HAVE_FLAC||HAVE_OGGFLAC instead.

Renamed functions and variables.

Renamed functions and variables.

Renamed variables.

MPD used to have a copy of the mp4ff library.  Since that has been
removed, AAC suport was disabled when there was no libmp4ff.  Separate
the libmp4ff test, and enable AAC support no matter if libmp4ff is
available.

Commit 1a4a3e1f moved decoders into a static array, but failed to
enable those plugins who did not have an init() method at all.
This patch corrects the "enabled" check.