ZeroconfAvahi: integrate into the EventLoop

Finally fixes the regression by commit c1f4f1fd.

src/AvahiPoll.hxx

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2003-2013 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.
+ */
+
+#ifndef MPD_AVAHI_POLL_HXX
+#define MPD_AVAHI_POLL_HXX
+
+#include "check.h"
+#include "Compiler.h"
+
+#include <avahi-common/watch.h>
+
+class EventLoop;
+
+class MyAvahiPoll final : public AvahiPoll {
+	EventLoop &event_loop;
+
+public:
+	MyAvahiPoll(EventLoop &_loop);
+
+private:
+	static AvahiWatch *WatchNew(const AvahiPoll *api, int fd,
+				    AvahiWatchEvent event,
+				    AvahiWatchCallback callback,
+				    void *userdata);
+
+	static AvahiTimeout *TimeoutNew(const AvahiPoll *api,
+					const struct timeval *tv,
+					AvahiTimeoutCallback callback,
+					void *userdata);
+};
+
+#endif