fix build against the latest gcc/glibc

* dbus/dbus-sysdeps-unix.c: define _GNU_SOURCE
* bus/selinux.c: include limits.h
* Patch by Matthias Clasen <mclasen at redhat.com>

ChangeLog

+2008-02-21  John (J5) Palmieri  <johnp@redhat.com>
+	
+	* fix build against the latest gcc/glibc
+	* dbus/dbus-sysdeps-unix.c: define _GNU_SOURCE
+	* bus/selinux.c: include limits.h
+	* Patch by Matthias Clasen <mclasen at redhat.com>
+
 2008-02-21  John (J5) Palmieri  <johnp@redhat.com>
 
 	* fixes dbus-launch so the bus goes away when X does

bus/selinux.c

@@ -34,6 +34,7 @@
 #ifdef HAVE_ERRNO_H
 #include <errno.h>
 #endif
+#include <limits.h>
 #include <pthread.h>
 #include <syslog.h>
 #include <selinux/selinux.h>

dbus/dbus-sysdeps-unix.c

@@ -22,6 +22,8 @@
  *
  */
 
+#define _GNU_SOURCE 
+
 #include "dbus-internals.h"
 #include "dbus-sysdeps.h"
 #include "dbus-sysdeps-unix.h"