Seems like we forgot to give this module a name...  this can crash MPD
on startup.

Conflicts:
	NEWS
	configure.ac

Conflicts:
	NEWS
	configure.ac
	src/directory.h

When a music_chunk to be crossfaded consists only of a tag,
cross-fading is not possible, and led to an assertion failure.  This
patch just discards those, as if cross-fading was not enabled.

During the whole output thread, the audio_output object is locked, and
it is only unlocked while waiting for the GCond and while running a
plugin method.  The error handler in ao_play_chunk() attempted to lock
the object again, which was code from MPD 0.15.x which should have
been removed a long time ago.

Until the decoder plugin has called decoder_initialized(), the player
may not submit seek commands.  This however could occur with a slow
decoder and a CUE file with a virtual song offset.  This patch adds
another check.

When you don't explicitly set an output sample rate, liblame tries to
guess an output sample rate from the input sample rate.  You would
think that this "guessing" consists of just setting both equal, but
that is not the case.  For 44.1kHz at 96kbit/s, liblame chooses
32kHz.  This patch explicitly configures the output sample rate, to
stop the bad guessing.

This is a MPD 0.16 regression: when playing a 24 bit file, the switch
to 16 bit was made only partially, after mBytesPerPacket and
mBytesPerFrame had already been applied.

That means mBytesPerFrame referred to 24 bit, and mBitsPerChannel
referred to 16 bits.  Of course, that cannot work.

Use "printf" instead.

Fixes autotools warnings.

Don't create a modified copy for out-of-tree builds.

Don't look up songs in the database, no caller needs this.

Optionally allow all local files.

"Insecure" mode is used for printing playlists.

Replace g_strchug() calls with a cheaper implementation.

Just there to support the "cdio_paranoia" input plugin.

Was missing.

Another build fix.

It is known to crash instantly.

Cast the constant to dev_t, not to unsigned.

Fixes the gcc warning "implicit declaration of function 'htons'".