Conflicts:
	src/player_thread.c
	src/playlist_control.c

There's no bzero() on WIN32.

Be portable on WIN32.

In the "vorbis" plugin, this is a copy of the old flush() method,
while flush() gets a lot of code remove, it just sets the "flush" flag
and nothing else.  It doesn't start a new stream now, which should fix
a few problems in some players.

Enable gcc optimizations.

The method may take longer, and we shouldn't be holding the lock.

It used to ignore the decoder_data() return value.

libwavpack provides int32_t samples, and wants uin32_t for sample
counts.

.. and remove one indent level.

Use a shortcut in playlist_seek_song(), don't call
playlist_play_order() because that would reset the "paused" state.

Sorts remaining songs by priority.  This can be used for the
much-demanded "queue feature".

Conflicts:
	NEWS
	configure.ac

av_open_input_stream() has been deprecated.

AVMetadata has been deprecated.

For accessing the child of a directory, one needs X_OK on the
directory.

This patch seems a bit ugly, maybe it would be a bit cleaner with gotos.

Was always displayed as "no", even if one was found.

FFmpeg/libav have dropped AVIO_RDONLY in favor of AVIO_FLAG_READ. This
patch fixes that in MPD.

Don't calculate the song duration when the sample rate is 0 (division
by zero crash).