This is probably unsafe, and doesn't protect against symlink loops,
but we will eventually add this when we bring update*.c and inotify*.c
closer together.

This shouldn't really happen, but insane users might delete/rename the
music directory while MPD runs.  What was even more insane was that
MPD crashed due to this.  This is a workaround - there is currently
nothing useful we can do in this case; except maybe poll for the music
directory to reappear, but that's too much trouble for a user error.

I'm not sure if mapping "band" to TAG_PERFORMER is correct, but it
might be better than nothing.

Convert if/else/else/... to a loop.

The underlying library is named "libmp4ff".  To reduce confusion,
rename the plugin to a more specific name.

Allow code sharing.

I took these tag names from a MusePack sample file I got from a user.
These are not documented in the APE specification:

 http://wiki.hydrogenaudio.org/index.php?title=APE_key

People seem to be using undocumented extensions to the specification
anyway, and the best we can do is attempt to support them.

Conflicts:
	NEWS
	configure.ac
	src/input/mms_input_plugin.c

Reduce the overhead.  Most buffers used by MPD are around 2 to 4 kB.
8 kB seems large enough to keep heap fragmentation low.

Additionally, this patch fixes an off-by-one error in the alignment
formula.

Declaring the global variable _CRT_fmode is a documented hack.  What
an ugly platform!

Add the flag "b" to fopen().  Windows compatibility.

Windows compatibility.

On mingw32, snprintf() expects a 64 bit integer instead of a "long
int" for "%li" - this is not consistent with our expectation, so we're
using plain sprintf().

For some unknown reason, read() blocks on WIN32, even though it was
invoked inside the G_IO_IN callback.  By switching to GIOChannel
functions, this problem is solved, and it works on both Linux and
Windows.

On WIN32, use g_io_channel_win32_new_fd() instead of
g_io_channel_unix_new().  There doesn't seem to be a practical
difference, but it seems more correct.

inode numbers don't work on WIN32, and very few WIN32 users actually
use symlinks - seems ok to disable that check.

Not a CPP macro.  This adds the "unused" attribute to "saveptr", which
eliminates one gcc warning.

On WIN32, "%F" and "%T" are not implemented.

In the winsock headers, the setsockopt() argument is declared as
"const char *", not "const void *".

This function is empty on WIN32, but we need to return a value.

input_stream_buffer() has a check for "buffer==NULL", so we don't need
an explicit empty implementation.

Pay attention to the ReplayGain mode "auto" and the
replay_gain_missing_preamp parameter inside of decoder_replay_gain().

Added #ifdefs on the macros AFMT_S24_NE and other OSS4 extensions.

Removed the "supported" / "unsupported" arrays, and auto-detect on
every open() call, just like the ALSA output plugin.

Removed the macro AFMT_S16_MPD.

In mingw32, int16_t is not defined by sys/types.h, but it is by stdint.h,
and it is in the int16_t man page as being defined in stdint.h. Thanks to
mithi for help debugging.