Dump all archive plugins, even those that fail to initialise.

g_file_test is redefined to be g_file_test_utf8 and thus can't handle
non-ASCII characters. This fix adds simple wrapper (taken from glib)
that fixes encoding and calls g_file_test_utf8. All required inclusions
of glib_compat.h are added as well.

Replaced all occurrences of g_error() with MPD_ERROR() located in a new header
file 'mpd_error.h'. This macro uses g_critical() to print the error message
and then exits gracefully in contrast to g_error() which would internally call
abort() to produce a core dump.

The macro name is distinctive and allows to find all places with dubious error
handling. The long-term goal is to get rid of MPD_ERROR() altogether. To
facilitate the eventual removal of this macro it was added in a new header
file rather than to an existing header file.

This fixes #2995 and #3007.

After we've been hit by Large File Support problems several times in
the past week (which only occur on 32 bit platforms, which I don't
have), this is yet another attempt to fix the issue.

Export the decoder_plugins array.  The function
decoder_plugin_print_all_decoders() it is UI specific and should not
live in this backend library.

Accidently, MPD has been using several GLib 2.16 functions for a
while, and nobody noticed yet.  To simplify the code base, let's bump
the minimum GLib version for MPD to 2.16.  That version is old enough,
and it's reasonable to expect users to have it.

Don't call g_error(), which will abort the process and dump core.

This patch does not affect all the config_get_X() functions.  These
need some more refactoring.

Don't call g_error(), which will abort the process and dump core.

Both options are deprecated, and should not be used anymore.  Many
users get confused by their presence.

Instead of hard-coding the path "/etc/mpd.conf", use the configured
$(sysconfdir) path.  This can be set with:

 ./configure --sysconfdir=/etc

Note that this changes the default path to "/usr/local/etc/mpd.conf",
given the default prefix "/usr/local".  This is actually more correct
than the old default.

On FreeBSD, "stderr" is a macro, and using this name for a struct
member breaks the build.

[mk: renamed _stderr to log_stderr]

Since version 0.14, MPD has been logging to standard error instead of
standard output.  The option name should reflect that.  The old option
continues to work, we will remove it in a future MPD release.

Renamed type, variables and functions.

This updates the copyright header to all be the same, which is
pretty much an update of where to mail request for a copy of the GPL
and the years of the MPD project. This also puts all committers under
'The Music Player Project' umbrella. These entries should go
individually in the AUTHORS file, for consistancy.

Use GLIB_CHECK_VERSION() instead of manually checking
GLIB_MAJOR_VERSION, ...

Print the list of suffixes supported by each decoder, instead of
prining a list of all suffixes of all decoders with duplicates.

Renamed functions, types, variables.

mpd uses some additional files to work, such as pid_file, state_file,
db_file, etc. when running mpd as non-root user, it is often that those
files end in ~/.mpd

in that case, we end up with 2 entries in a user's home, .mpdconf and
.mpd - which clutters homedirs.

this patch allows ~/.mpd/mpd.conf as an alternative to ~/.mpdconf,
allowing for a cleaner homedir

Start the daemon after --create-db.  This makes --create-db a flag
which discards the old database and starts with a fresh one.

Don't start the daemon when MPD is called with "--version".

Only include headers which are really needed.  os_compat.h aimed to
make MPD easily portable, but was never actually made portable.

Removed the "error_file" option.  There is only one log file now.  If
a user wants to see only the errors, he should configure a log_level.