util/Error: new error passing library

Replaces GLib's GError.

src/protocol/Ack.cxx

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Ack.hxx"
+#include "util/Domain.hxx"
+
+const Domain ack_domain("ack");

src/protocol/Ack.hxx

@@ -20,9 +20,7 @@
 #ifndef MPD_ACK_H
 #define MPD_ACK_H
 
-#include "gcc.h"
-
-#include <glib.h>
+class Domain;
 
 enum ack {
 	ACK_ERROR_NOT_LIST = 1,
@@ -40,14 +38,6 @@ enum ack {
 	ACK_ERROR_EXIST = 56,
 };
 
-/**
- * Quark for GError.domain; the code is an enum #ack.
- */
-gcc_const
-static inline GQuark
-ack_quark(void)
-{
-	return g_quark_from_static_string("ack");
-}
+extern const Domain ack_domain;
 
 #endif

src/protocol/Result.hxx

@@ -24,6 +24,8 @@
 #include "gcc.h"
 #include "Ack.hxx"
 
+#include <stdarg.h>
+
 class Client;
 
 extern const char *current_command;