This is the version present in Ubuntu Oneiric, the oldest distribution
with gcc 4.6.  Debian Squeeze is off target, because it has gcc 4.4,
which is unable to compile MPD anyway.

This commit drops all API compatibility hacks for older versions.

The underlying library has been obsolete for many years.

Usually, when strndup() is not available, strndup() isn't either,
because both are POSIX 2008.

The libwrap version on Mac OS X is broken, it will not work with C++
due to broken function prototypes.

We're going to use Vista features soon.  Sorry for those poor people
still on XP (or Windows, anyway).

This patch also adds extern "C" { } wrapper around string_util.h
to allow its usage in C++ code

At least in my configuration libgme lacks .pc file
thus could not be detected with pkg-config.

RTTI adds overhead to the binary, and we don't need that.

We don't use exceptions currently.  Since allowing exceptions means a
lot of overhead, this commit disables the feature.

Allows eliminating more dead code.  Adds two more C++ options that may
reduce the binary size.

main.c has been renamed to Main.cxx.

libvorbisidec and libvorbis export the same symbols, which is a
dangerous thing.  Since libvorbisenc depends on libvorbis, this can
get nasty, so let's disable the Vorbis encoder unless the user
explicitly wants it.

Using libopus and libogg.

Updates the WIN32 version number for the upcoming 0.18 release.

Now that the libfluidsynth API was sanitized, we can enable the plugin
automatically if libfluidsynth is installed.

The libfluidsynth API is now sane, and does not require real-time
decoding.

Implementation incomplete, but sort-of-works.  DumpDatabase works, but
MPD is still hard-coded on the "simple" plugin.

Produce a smaller binary by removing all unused functions.

We'll add some C++11 code soon.