size_t is unsigned most of the time, so we can't really use it to
check for negative values. Also handle strtol overflow.

An empty string is obviously not a valid integer.

Shortcut for map_directory_fs(db_get_root()).

Work around a confusing error message.

Avoid reversing the order after every update.

Conflicts:
	NEWS
	configure.ac
	src/decoder/ffmpeg_decoder_plugin.c
	test/read_tags.c

This was disabled when compiled with a new ffmpeg version.  Older
ffmpeg versions used it explicitly, while newer ones may pass it
through from the codec.

This fixes seeking in the vorbis decoder during MPD startup.

This fixes a bug when libsamplerate returns an empty buffer for a very
small input buffer.  The caller thinks this is an error, bug there is
no GError object.

pcm_buffer_get() cannot ever return NULL.

Directories are loaded in reverse order when MPD starts. Only fixed
when doing a rescan.

The FLAC playlist plugin has been superseded by the "embcue" playlist
plugin, which can read the embedded CUE sheets of all formats.

An embedded CUE sheet must always point to the song file it is
contained in.

This finally enables the new embedded CUE sheet code: when a song file
contains a playlist, it is printed in the "lsinfo" output, so clients
get to know about this.

Use _scan() instead, to have more control.