The function does not need the full pcm_convert_state struct.

Moved all code which converts the sample format to a separate library.

Moved the software mixing code (used by crossfading) to a separate
library.

Moved the software volume code to a separate library.

We are going to split the pcm_utils.c library, and pcm_range() will be
useful for several sub libraries.

Get rid of the non-portable Linux list library, part III (final).

Get rid of the non-portable Linux list library, part II.

Get rid of the non-portable Linux list library, part I.

Fix a typo in the icy-metadata patch.

Declare and initialize MPD_LIBS and MPD_CFLAGS before the "OS specific
defaults" section.

Both are unused.

Yesterday's patch set changed tagItemFoundAndMatches() and moved the
strcmp() return value into a bool, but forgot to add the ==0 check.

"#ifdef G_BYTE_ORDER == G_BIG_ENDIAN" cannot work, of course.

Zeroconf, curl, libsamplerate.  No libid3tag for now, because
libid3tag should be automatically disabled when no decoders using it
are enabled.

Don't separate basic options from their according tests.  Due to lots
of interdependencies, we won't do that for the plugins yet.

Print input plugins first, then archive, metadatab, decoder,
converter, encoder, output plugins.

Initialize the CFLAGS (warnings, errors) after all the libraries,
because some library checks may be broken with -Werror or -pedantic.

AC_CHECK_HEADERS defines HAVE_LOCALE_H, so we don't have to manually
define HAVE_LOCALE.

First do the checks for mandatory stuff (libc features, glib,
pkg-config), then all the options.

Don't check for inttypes.h and langinfo.h.

Fix a typo.

Use g_strndup() instead of g_memdup().

Make db_load(), db_save() and db_check() return bool instead of int.

For updating the database, directory_update_init() should be called
explicitly.

It's unused.

The notify library is easier to use, and has no disadvantages.

Start the daemon after --create-db.  This makes --create-db a flag
which discards the old database and starts with a fresh one.

Handle the DELETE and UPDATE events in separate callbacks:
song_delete_event() safely deletes a song, and update_finished_event()
is called when database update is complete.

GLib mandates that you initialize all GError objects with NULL prior
to passing it.

Pass NULL instead of &error to g_convert().  We're not interested in
the error object.

Use GLib's g_build_filename() instead of pfx_dir().

directory_is_root() is cheaper than
isRootDirectory(directory_get_path()).