Those two functions are called when MPD starts and exits.  It allows
the update library to perform global initialization and
deinitialization.  The implementations are currently empty.

In contrast to, getBoolConfigParam(), config_get_bool() properly
returns a "bool" value.  In case of "unset", it returns the default
value provided by the caller.

Use GLib's g_warning(), ... instead of MPD's deprecated log.h.

input_curl.c does not support parsing shoutcast metadata yet.  Disable
the "Icy-Metadata" header for now, since it may cause corruptions in
the stream.

Make valgrind happier.

If the shout plugin is disabled, shout_plugin.c isn't compiled at all,
no need to check the macro definition.

I have found something that looks like a bug in MPD:
- When a song is finished, the next one is played and the 'player'
  event is emitted.
- When the client sends the status command just after this event, the
  songid is the new one but the 'elapsed' time is not reseted to 0.

This is problem because I have implemented the solution using a timer
on client side to compute the elapsed time but with this bug the
elapsed time continues to be incremented on a new song.

When ao_open_live() failed, MPD would ignore the error code in
"errno".  Make it print a meaningful error message.

The function audioOutputAo_error() did not implement all possible
libao error codes.  Support the rest of them, and fall back to
strerror().

SEEK_SET is defined by unistd.h.  Explicitly include it.

The music pipe audio format bugs seem to be fixed (hopefully).
Disable music_pipe_check_format() for now, since it consumes a lot of
CPU cycles.

Added $(DOCBOOK_FILES) to $(EXTRA_DIST).  Don't include the generated
protocol.html in the tarball.

Renamed the local variable "basename", which shadows the POSIX
function basename().

Since we don't use libtool anymore, autogen.sh shouldn't call libtoolize.

We shouldn't pass strerror() where a format string is expected.

assert_static() will help us to find false asserts in compile time. Of
course it only works in case of expressions which can be evaluated
compile time. It cannot be used in global scope.

The client may provide the names of idle events as arguments to the
"idle" command to inform MPD that it is only interested in these
events.