Moved generic compiler options to AM_CFLAGS.  MPD_CFLAGS/MPD_LIBS will
hopefully fade away one day, in favor of more fine-grained variables.

Renamed the old AM_CFLAGS to AM_CPPFLAGS, because it contained only
preprocessor options.  Append it to src_mpd_CPPFLAGS.  Removed
GLIB_LIBS from src_mpd_CPPFLAGS, because it is already part of
AM_LDFLAGS.

Added "make" variables for the sources and dependencies of each
subsystem (archive, input, output, decoder, encoder, mixer).

"ls" is a bad name for a library which parses URIs.  We'll move the
rest of the "ls" library later.

Fix a gcc warning.

Don't return an uninitialized bool variable.

Fix a gcc warning, initialize the "space" variable at the beginning of
mpd_jack_play().

Work around gcc warnings by casting the parameters to void.

Don't explicitly check is_ipv6_enabled(), just try calling
listen_add_port_ipv6(), but check its error code.

Some more code simplification.

For default bind_to_address settings, don't call
listen_add_config_param(NULL), use listen_add_port() directly.

Split code from the rather large function listen_add_config_param(),
part 3.

Split code from the rather large function listen_add_config_param(),
part 2.

Split code from the rather large function listen_add_config_param().

Don't return -1 on failure, and abort on fatal error - do proper error
reporting with GError, and return false on failure.

Renamed functions.

Removed superfluous commas.

After much research[1][2][3] this should be the majority of currently
supported file extensions and mime-types for the currently supported
ffmpeg formats. This list maybe incomplete, but it's more complete
than anything else out there that I've been able to find. This list
needs to be updated every now and again as the ffmpeg sources support
more formats.

 1. Sources
 2. wiki.multimedia.cx
 3. filext.com

Recursive Makefiles are inefficient and error prone (no proper way to
declare dependencies).  Since there's no disadvantage in having one
single Makefile, let's do it.

The meaning of the chunk depends on the audio format; don't suggest a
specific format by declaring the pointer as "char*", pass "void*"
instead.

The old API required an output plugin to not return until all data
passed to the play() method is consumed.  Some output plugins have to
loop to fulfill that requirement, and may block during that.  Simplify
these, by letting them consume only part of the buffer: make play()
return the length of the consumed data.

There are no plugins left which require shout_plugin.h.  Moved the
struct declaration to shout_plugin.c.

This array is empty, and is not used anymore.

Removed shout's encoder plugin API in favor of the new generic encoder
plugin API.

This new LAME encoder plugin is based on the existing shout_mp3.c
plugin.

This new vorbis encoder plugin is based on the existing shout_ogg.c
plugin.

The new generic encoder API will replace shout's custom encoder API.

The method implementation my_shout_open_device() consists of only one
line, the call to open_shout_conn().  Merge both functions into one.

Return true/false instead of 0/-1.

The function path_set_fs_charset() is only used in path.c.

The parameter name "wait" overlaps with the POSIX wait() function.
Rename it.

Now that I've found this nice function in the GLib docs, we can
finally remove our custom sleep function.  Still all those callers of
g_usleep() have to be migrated one day to use events, instead of
regular polling.

Don't use libfaad's internal type names.

Define the GLib logging domain in the following libraries: conf,
daemon, event_pipe, log.

For better debugging aid when something goes wrong, log the name of
the effective configuration file.