syslog_daemon: Converted to BServer.

* Instead of letting the kernel search for the syslog port, the
  daemon now registers itself with the kernel (which even solves
  a TODO).
* A port is created for the actual log messages from the launch_daemon,
  and used on start.
* However, the SyslogTest does not yet work, due to the BMessage <->
  KMessage communication problems.

headers/private/syslog_daemon/syslog_daemon.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2006, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2003-2015, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef SYSLOG_DAEMON_H
@@ -9,7 +9,7 @@
 #include <OS.h>
 
 
-#define SYSLOG_PORT_NAME		"syslog_daemon"
+#define B_SYSTEM_LOGGER_SIGNATURE	"application/x-vnd.Haiku-SystemLogger"
 
 #define SYSLOG_MESSAGE			'_Syl'
 #define SYSLOG_ADD_LISTENER		'aSyl'